Rank	Countries/Territories	Count	Percent
1	United States	426	49.2%
2	China	157	18.2%
3	Germany	129	14.9%
4	France	28	3.2%
5	Netherlands	27	3.1%
6		24	2.8%
7	Korea, Republic of	12	1.4%
8	Australia	11	1.3%
9	Japan	10	1.2%
10	Canada	5	0.6%
11	India	5	0.6%
12	Ireland	4	0.5%
13	Israel	4	0.5%
14	Cyprus	4	0.5%
15	Iran, Islamic Republic of	3	0.3%
16	Malaysia	3	0.3%
17	Mongolia	2	0.2%
18	Singapore	2	0.2%
19	Taiwan	2	0.2%
20	Thailand	2	0.2%
21	Ukraine	2	0.2%
22	Belgium	2	0.2%
23	Argentina	1	0.1%