Rank	Countries/Territories	Count	Percent
1	United States	519	44.7%
2	China	275	23.7%
3	Germany	127	10.9%
4	France	37	3.2%
5	Ukraine	29	2.5%
6	Australia	25	2.2%
7	India	23	2%
8	Netherlands	19	1.6%
9	Canada	13	1.1%
10	United Kingdom	11	0.9%
11	Japan	10	0.9%
12	Ireland	9	0.8%
13	Singapore	6	0.5%
14	Sweden	6	0.5%
15	Cyprus	6	0.5%
16	Iran, Islamic Republic of	6	0.5%
17	Hong Kong	5	0.4%
18	Taiwan	5	0.4%
19	Mongolia	3	0.3%
20	Norway	3	0.3%
21	Russia	3	0.3%
22	Argentina	3	0.3%
23	Austria	2	0.2%
24	Bangladesh	2	0.2%
25	Costa Rica	2	0.2%
26	Greece	2	0.2%
27	Korea, Republic of	2	0.2%
28	Malaysia	1	0.1%
29	Mexico	1	0.1%
30	Italy	1	0.1%
31	Switzerland	1	0.1%
32	Indonesia	1	0.1%
33	Denmark	1	0.1%
34	Colombia	1	0.1%