1870 Ranking
    1. Switzerland 3.89
    2. Norway 3.82
    3. United States 3.70
    4. New Zealand 3.53
    5. Sweden 3.51
    6. Czech Republic 3.05
    7. Netherlands 2.89
    8. Canada 2.42
    9. Denmark 2.39
    10. Belgium 2.27
    11. Austria 2.13
    12. Germany 1.95
    13. Australia 1.61
    14. Hungary 1.54
    15. Spain 1.25
    16. Poland 1.22
    17. Bulgaria 0.92
    18. United Kingdom 0.80
    19. Italy 0.77
    20. Iceland 0.74
    21. Barbados 0.72
    22. France 0.66
    23. Greece 0.64
    24. Ireland 0.62
    25. Jamaica 0.53
    26. South Africa 0.52
    27. Japan 0.42
    28. Trinidad and Tobago 0.35
    29. Chile 0.32
    30. Belize 0.29
    31. Argentina 0.28
    32. Mexico 0.28
    33. Colombia 0.26
    34. Uruguay 0.24
    35. Malta 0.23
    36. Costa Rica 0.23
    37. Cyprus 0.22
    38. Portugal 0.19
    39. Honduras 0.18
    40. Guatemala 0.17
    41. Sri Lanka 0.16
    42. Reunion 0.16
    43. El Salvador 0.16
    44. Guyana 0.15
    45. Ecuador 0.13
    46. Mauritius 0.13
    47. Nicaragua 0.12
    48. Russia 0.11
    49. Brazil 0.10
    50. Finland 0.10
    51. Romania 0.08
    52. Algeria 0.08
    53. Cuba 0.08
    54. Panama 0.06
    55. Serbia 0.06
    56. Paraguay 0.05
    57. Bolivia 0.05
    58. Gambia 0.04
    59. Luxembourg 0.03
    60. Dominican Republic 0.03
    61. Liberia 0.03
    62. Burma (Myanmar) 0.03
    63. Lesotho 0.02
    64. Albania 0.02
    65. Philippines 0.02
    66. India 0.02
    67. Sierra Leone 0.02
    68. Yemen 0.01
    69. Zambia 0.01
    70. Syria 0.01
    71. Senegal 0.01
    72. Venezuela 0.01
    73. Taiwan 0.01
    74. Uganda 0.01
    75. South Korea 0.01
    76. Turkey 0.01
    77. Tunisia 0.01
    78. Sudan 0.01
    79. Togo 0.01
    80. Afghanistan 0.01
    81. Kenya 0.01
    82. Peru 0.01
    83. Hong Kong 0.01
    84. Bangladesh 0.01
    85. Benin 0.01
    86. Cambodia 0.01
    87. Cameroon 0.01
    88. China 0.01
    89. Ivory Coast 0.01
    90. Congo (Kinshasa) 0.01
    91. Egypt 0.01
    92. Swaziland 0.01
    93. Fiji 0.01
    94. Ghana 0.01
    95. Haiti 0.01
    96. Indonesia 0.01
    97. Pakistan 0.01
    98. Iran 0.01
    99. Iraq 0.01
    100. Jordan 0.01
    101. Kuwait 0.01
    102. Libya 0.01
    103. Malawi 0.01
    104. Malaysia 0.01
    105. Mali 0.01
    106. Morocco 0.01
    107. Mozambique 0.01
    108. Nepal 0.01
    109. Niger 0.01
    110. Zimbabwe 0.01
    2017 Ranking
    1. Germany 14.10
    2. United States 13.40
    3. Switzerland 13.40
    4. Canada 13.30
    5. Lithuania 13.00
    6. Israel 13.00
    7. Australia 12.90
    8. United Kingdom 12.90
    9. Georgia 12.80
    10. Japan 12.80
    11. Latvia 12.80
    12. Czech Republic 12.70
    13. Estonia 12.70
    14. Norway 12.60
    15. Denmark 12.60
    16. Slovakia 12.50
    17. New Zealand 12.50
    18. Liechtenstein 12.50
    19. Ireland 12.50
    20. Sweden 12.40
    21. Finland 12.40
    22. Iceland 12.40
    23. Palau 12.30
    24. Belarus 12.30
    25. Poland 12.30
    26. Slovenia 12.20
    27. Netherlands 12.20
    28. South Korea 12.10
    29. Austria 12.10
    30. Luxembourg 12.10
    31. Cyprus 12.10
    32. Hong Kong 12.00
    33. Russia 12.00
    34. Hungary 11.90
    35. Kazakhstan 11.80
    36. Bulgaria 11.80
    37. Belgium 11.80
    38. Cuba 11.80
    39. Armenia 11.70
    40. Moldova 11.60
    41. Singapore 11.50
    42. Uzbekistan 11.50
    43. France 11.50
    44. Croatia 11.30
    45. Montenegro 11.30
    46. Malta 11.30
    47. Ukraine 11.30
    48. Tonga 11.20
    49. Bahamas 11.10
    50. Serbia 11.10
    51. Romania 11.00
    52. Marshall Islands 10.90
    53. Sri Lanka 10.90
    54. Kyrgyzstan 10.90
    55. Trinidad and Tobago 10.90
    56. Greece 10.80
    57. Fiji 10.80
    58. United Arab Emirates 10.80
    59. Azerbaijan 10.70
    60. Barbados 10.60
    61. Belize 10.50
    62. Tajikistan 10.40
    63. Jordan 10.40
    64. Samoa 10.30
    65. Venezuela 10.30
    66. Chile 10.30
    67. Andorra 10.20
    68. Italy 10.20
    69. Panama 10.20
    70. Malaysia 10.20
    71. Mongolia 10.10
    72. South Africa 10.10
    73. Albania 10.00
    74. Argentina 9.90
    75. Qatar 9.80
    76. Turkmenistan 9.80
    77. Jamaica 9.80
    78. Iran 9.80
    79. Spain 9.80
    80. Bosnia and Herzegovina 9.70
    81. Macedonia (F.Y.R.O.M.) 9.60
    82. Oman 9.50
    83. Saudi Arabia 9.50
    84. Seychelles 9.50
    85. Bahrain 9.40
    86. Philippines 9.30
    87. Mauritius 9.30
    88. Botswana 9.30
    89. Antigua and Barbuda 9.20
    90. Portugal 9.20
    91. Peru 9.20
    92. Brunei 9.10
    93. West Bank and Gaza 9.10
    94. Saint Lucia 8.90
    95. Bolivia 8.90
    96. Costa Rica 8.80
    97. Lebanon 8.70
    98. Uruguay 8.70
    99. Ecuador 8.70
    100. Grenada 8.70
    101. Saint Vincent and Grenadines 8.60
    102. Mexico 8.60
    103. Suriname 8.50
    104. Saint Kitts and Nevis 8.40
    105. Guyana 8.40
    106. Paraguay 8.40
    107. Colombia 8.30
    108. Vietnam 8.20
    109. Zimbabwe 8.20
    110. Gabon 8.20
    111. Turkey 8.00
    112. Algeria 8.00
    113. Indonesia 8.00
    114. Kiribati 7.90
    115. Dominica 7.80
    116. Brazil 7.80
    117. China 7.80
    118. Dominican Republic 7.80
    119. Thailand 7.60
    120. Libya 7.30
    121. Kuwait 7.30
    122. Egypt 7.20
    123. Tunisia 7.20
    124. Ghana 7.10
    125. Zambia 7.00
    126. El Salvador 6.90
    127. Iraq 6.80
    128. Vanuatu 6.80
    129. Namibia 6.80
    130. Congo (Kinshasa) 6.80
    131. Nicaragua 6.70
    132. Kenya 6.50
    133. Honduras 6.50
    134. Guatemala 6.50
    135. Swaziland 6.50
    136. India 6.40
    137. Cameroon 6.30
    138. Congo (Brazzaville) 6.30
    139. Lesotho 6.30
    140. Saint Thomas and Principe 6.30
    141. Maldives 6.30
    142. Nigeria 6.20
    143. Cape Verde 6.10
    144. Uganda 6.10
    145. Madagascar 6.10
    146. Tanzania 5.80
    147. Bangladesh 5.80
    148. Solomon Islands 5.50
    149. Equatorial Guinea 5.50
    150. Morocco 5.50
    151. Haiti 5.30
    152. Pakistan 5.20
    153. Laos 5.20
    154. Ivory Coast 5.20
    155. Angola 5.10
    156. Syria 5.10
    157. Nepal 4.90
    158. Burma (Myanmar) 4.90
    159. Cambodia 4.80
    160. Togo 4.80
    161. South Sudan 4.80
    162. Comoros 4.80
    163. Liberia 4.70
    164. Papua New Guinea 4.60
    165. Timor Leste 4.50
    166. Mauritania 4.50
    167. Malawi 4.50
    168. Central African Republic 4.30
    169. Djibouti 4.10
    170. Rwanda 4.10
    171. Eritrea 4.00
    172. Afghanistan 3.80
    173. Sudan 3.70
    174. Benin 3.60
    175. Sierra Leone 3.50
    176. Gambia 3.50
    177. Mozambique 3.50
    178. Bhutan 3.10
    179. Senegal 3.00
    180. Burundi 3.00
    181. Guinea Bissau 3.00
    182. Yemen 3.00
    183. Ethiopia 2.70
    184. Guinea 2.60
    185. Mali 2.30
    186. Chad 2.30
    187. Niger 2.00
    188. Burkina Faso 1.50