Rank	Countries/Territories	Count	Percent
1	United States	476	45.6%
2	China	248	23.8%
3	Germany	80	7.7%
4	Japan	39	3.7%
5	Brazil	36	3.4%
6	Canada	32	3.1%
7	Singapore	21	2%
8	Netherlands	16	1.5%
9	Russia	14	1.3%
10	Cyprus	8	0.8%
11	Korea, Republic of	8	0.8%
12	France	6	0.6%
13	Ireland	6	0.6%
14	Iran, Islamic Republic of	6	0.6%
15	Australia	6	0.6%
16	India	5	0.5%
17	Ukraine	5	0.5%
18	United Kingdom	5	0.5%
19	Taiwan	3	0.3%
20	Norway	3	0.3%
21	Iraq	3	0.3%
22	Mongolia	3	0.3%
23	Hong Kong	3	0.3%
24	Denmark	2	0.2%
25	Saudi Arabia	2	0.2%
26	Slovakia	2	0.2%
27	Sweden	2	0.2%
28	Switzerland	1	0.1%
29	Thailand	1	0.1%
30	Belgium	1	0.1%
31	Indonesia	1	0.1%