Rank	Countries/Territories	Count	Percent
1	United States	475	39.4%
2	China	340	28.2%
3	Germany	171	14.2%
4	Japan	39	3.2%
5	India	32	2.7%
6	Netherlands	24	2%
7	Switzerland	20	1.7%
8	Russia	12	1%
9	Singapore	11	0.9%
10	France	11	0.9%
11	Canada	9	0.7%
12	Austria	7	0.6%
13	Australia	6	0.5%
14	Cyprus	6	0.5%
15	Iran, Islamic Republic of	5	0.4%
16	Hungary	4	0.3%
17	Brazil	4	0.3%
18	Philippines	4	0.3%
19	Mongolia	4	0.3%
20	Italy	3	0.2%
21	South Africa	3	0.2%
22	Taiwan	3	0.2%
23	United Kingdom	3	0.2%
24	Ukraine	2	0.2%
25	Israel	2	0.2%
26	Korea, Republic of	1	0.1%
27	Ireland	1	0.1%
28	Hong Kong	1	0.1%
29	Argentina	1	0.1%
30	Sweden	1	0.1%
31	Portugal	1	0.1%