Rank	Countries/Territories	Count	Percent
1	United States	341	41.2%
2	China	261	31.5%
3	Germany	69	8.3%
4	France	30	3.6%
5	Korea, Republic of	20	2.4%
6	Japan	11	1.3%
7	Netherlands	11	1.3%
8	India	10	1.2%
9	Singapore	7	0.8%
10	Russia	6	0.7%
11	Pakistan	5	0.6%
12	Iran, Islamic Republic of	5	0.6%
13	Ireland	4	0.5%
14	Cyprus	4	0.5%
15	Australia	4	0.5%
16	Belgium	4	0.5%
17	Canada	4	0.5%
18	Taiwan	4	0.5%
19	Philippines	3	0.4%
20	Malaysia	3	0.4%
21	Morocco	2	0.2%
22	Azerbaijan	2	0.2%
23	Portugal	2	0.2%
24	Nicaragua	2	0.2%
25	Nigeria	2	0.2%
26	Thailand	2	0.2%
27	Turkey	2	0.2%
28	Ukraine	2	0.2%
29	United Kingdom	1	0.1%
30	Spain	1	0.1%
31	Uganda	1	0.1%
32	Hong Kong	1	0.1%
33	Mongolia	1	0.1%
34	Iraq	1	0.1%