Rank	Countries/Territories	Count	Percent
1	United States	451	37.6%
2	China	324	27%
3	Germany	78	6.5%
4	India	65	5.4%
5	South Africa	40	3.3%
6		33	2.7%
7	Andorra	20	1.7%
8	Canada	20	1.7%
9	Korea, Republic of	19	1.6%
10	Mexico	17	1.4%
11	Israel	17	1.4%
12	France	15	1.2%
13	Japan	15	1.2%
14	Netherlands	15	1.2%
15	Italy	9	0.7%
16	Greece	8	0.7%
17	Singapore	7	0.6%
18	Taiwan	6	0.5%
19	United Kingdom	5	0.4%
20	Russia	5	0.4%
21	Australia	5	0.4%
22	Cyprus	4	0.3%
23	Belgium	3	0.2%
24	Mongolia	3	0.2%
25	Ukraine	2	0.2%
26	Argentina	2	0.2%
27	Ethiopia	2	0.2%
28	Ireland	2	0.2%
29	Hong Kong	1	0.1%
30	Iran, Islamic Republic of	1	0.1%
31	Czech Republic	1	0.1%
32	Brazil	1	0.1%
33	Turkey	1	0.1%
34	Spain	1	0.1%
35	Switzerland	1	0.1%
36	Kazakhstan	1	0.1%
37	Moldova, Republic of	1	0.1%