Rank	Countries/Territories	Count	Percent
1	United States	362	38.1%
2	China	316	33.2%
3	Germany	87	9.1%
4		28	2.9%
5	India	27	2.8%
6	Netherlands	27	2.8%
7	Japan	26	2.7%
8	Canada	12	1.3%
9	Korea, Republic of	7	0.7%
10	Russia	5	0.5%
11	Australia	5	0.5%
12	Argentina	4	0.4%
13	United Kingdom	4	0.4%
14	Hong Kong	3	0.3%
15	South Africa	3	0.3%
16	Spain	3	0.3%
17	Bulgaria	3	0.3%
18	France	3	0.3%
19	Iran, Islamic Republic of	2	0.2%
20	Ireland	2	0.2%
21	Italy	2	0.2%
22	Belgium	2	0.2%
23	Cyprus	2	0.2%
24	Singapore	2	0.2%
25	Taiwan	2	0.2%
26	Mauritius	2	0.2%
27	Pakistan	2	0.2%
28	Philippines	2	0.2%
29	Romania	1	0.1%
30	Mongolia	1	0.1%
31	Switzerland	1	0.1%
32	Bangladesh	1	0.1%
33	Belarus	1	0.1%
34	Greece	1	0.1%