Rank	Countries/Territories	Count	Percent
1	United States	615	45.6%
2	China	371	27.5%
3	Germany	98	7.3%
4	Russia	75	5.6%
5	India	31	2.3%
6	Brazil	25	1.9%
7	Canada	18	1.3%
8	Netherlands	14	1%
9	Japan	13	1%
10	Korea, Republic of	12	0.9%
11	Hong Kong	11	0.8%
12	Ireland	10	0.7%
13	Taiwan	7	0.5%
14	Argentina	6	0.4%
15	Iran, Islamic Republic of	5	0.4%
16	Ukraine	5	0.4%
17	Australia	4	0.3%
18	United Kingdom	3	0.2%
19	Uruguay	3	0.2%
20	Romania	3	0.2%
21	Singapore	3	0.2%
22	Spain	2	0.1%
23	Norway	2	0.1%
24	France	2	0.1%
25	Malaysia	2	0.1%
26	Mongolia	2	0.1%
27	Jordan	1	0.1%
28	Bahrain	1	0.1%
29	Chile	1	0.1%
30	Finland	1	0.1%
31	Pakistan	1	0.1%
32	Poland	1	0.1%
33	Portugal	1	0.1%
34	Sweden	1	0.1%