Rank	Countries/Territories	Count	Percent
1	United States	311	42.5%
2	China	233	31.8%
3	Germany	88	12%
4	Japan	16	2.2%
5	Netherlands	12	1.6%
6	Canada	9	1.2%
7	France	9	1.2%
8	Cyprus	8	1.1%
9	Singapore	8	1.1%
10	Switzerland	8	1.1%
11	Korea, Republic of	6	0.8%
12	Australia	4	0.5%
13	Russia	4	0.5%
14	Ireland	4	0.5%
15	Brazil	2	0.3%
16	Latvia	2	0.3%
17	Iran, Islamic Republic of	2	0.3%
18	Taiwan	2	0.3%
19	United Kingdom	2	0.3%
20	Argentina	1	0.1%
21	Belgium	1	0.1%