Rank	Countries/Territories	Count	Percent
1	United States	600	43.7%
2	China	437	31.9%
3	Germany	142	10.3%
4	France	32	2.3%
5	Netherlands	20	1.5%
6	Switzerland	15	1.1%
7	Canada	14	1%
8	Japan	13	0.9%
9	Singapore	13	0.9%
10	United Kingdom	10	0.7%
11	India	6	0.4%
12	Ireland	5	0.4%
13	Cyprus	5	0.4%
14	Norway	5	0.4%
15	Korea, Republic of	4	0.3%
16	Mongolia	4	0.3%
17	Argentina	4	0.3%
18	Australia	4	0.3%
19	Israel	4	0.3%
20	Iran, Islamic Republic of	4	0.3%
21	Hong Kong	3	0.2%
22	Austria	3	0.2%
23	Taiwan	3	0.2%
24	Philippines	3	0.2%
25	Sweden	2	0.1%
26	Latvia	2	0.1%
27	New Zealand	2	0.1%
28	Thailand	2	0.1%
29	Ukraine	2	0.1%
30	Bangladesh	2	0.1%
31	Czech Republic	2	0.1%
32	Finland	2	0.1%
33	Costa Rica	1	0.1%
34	Bulgaria	1	0.1%
35	Russia	1	0.1%