 Jan 27, 2018 publication date through Aug 7, 20201 United States 18 30.52 Canada 10 16.93 China 9 15.34 Germany 9 15.35 India 3 5.16 Iran 2 3.47 Ireland 2 3.48 Republic of Korea 2 3.49 United Kingdom 1 1.710 France 1 1.711 Italy 1 1.712 Japan 1 1.7 