 1 United States 74 35.42 Germany 64 30.63 China 23 114 France 19 9.15 Sweden 7 3.36 Canada 6 2.97 Ukraine 4 1.98 Ireland 4 1.99 United Kingdom 3 1.410 Viet Nam 1 0.512 Korea, Republic of 1 0.513 Netherlands 1 0.514 Hong Kong 1 0.532 63 30 32 26 23 4 21039 33 36 22 21 26 23 22 29 29 21 23 32421 22 25 27 30 19 1 1 1 28 17510 16 19 14 10 69 