14. Rank Countries Amount CountriesAmount # 1 United States: 4.95 per 1,000 people United States # 2 Puerto Rico: 4.47 per 1,000 people Puerto Rico # 3 Russia: 3.36 per 1,000 people Russia # 4 United Kingdom: 3.08 per 1,000 people United Kingdom # 5 Denmark: 2.81 per 1,000 people Denmark # 6 New Zealand: 2.63 per 1,000 people New Zealand # 7 Australia: 2.52 per 1,000 people Australia # 8 Canada: 2.46 per 1,000 people Canada # 9 Finland: 1.85 per 1,000 people Finland # 10 Barbados: 1.21 per 1,000 people Barbados # 11 Guadeloupe: 1.18 per 1,000 people Guadeloupe # 12 Qatar: 0.97 per 1,000 people Qatar # 13 Portugal: 0.88 per 1,000 people Portugal # 14 Albania: 0.83 per 1,000 people Albania # 15 Tunisia: 0.82 per 1,000 people Tunisia # 16 Singapore: 0.8 per 1,000 people Singapore # 17 China: 0.79 per 1,000 people China # 18 Greece: 0.76 per 1,000 people Greece # 19 Brunei: 0.72 per 1,000 people Brunei # 20 Panama: 0.68 per 1,000 people Panama # 21 Syria: 0.65 per 1,000 people Syria # 22 Thailand: 0.58 per 1,000 people Thailand # 23 Mauritius: 0.47 per 1,000 people Mauritius # 24 Ecuador: 0.42 per 1,000 people Ecuador # 25 El Salvador: 0.41 per 1,000 people El Salvador # 26 Cyprus: 0.39 per 1,000 people Cyprus = 27 Chile: 0.38 per 1,000 people Chile = 27 Jamaica: 0.38 per 1,000 people Jamaica = 29 Mongolia: 0.37 per 1,000 people Mongolia = 29 Turkey: 0.37 per 1,000 people Turkey # 31 Mexico: 0.33 per 1,000 people Mexico # 32 Italy: 0.27 per 1,000 people Italy # 33 Brazil: 0.26 per 1,000 people Brazil # 34 Sri Lanka: 0.15 per 1,000 people Sri Lanka Weighted average: 1.3 per 1,000 people