Rank	Countries/Territories	Count	Percent
1	United States	291	36.2%
2	China	213	26.5%
3	Germany	101	12.6%
4	Japan	37	4.6%
5	Canada	22	2.7%
6	Romania	13	1.6%
7	Netherlands	12	1.5%
8	France	12	1.5%
9	Austria	9	1.1%
10	Turkey	9	1.1%
11	Singapore	8	1%
12	Korea, Republic of	8	1%
13	Australia	8	1%
14	Ireland	8	1%
15	Italy	7	0.9%
16	Palestine, State of	4	0.5%
17	Mexico	3	0.4%
18	Russia	3	0.4%
19	Indonesia	3	0.4%
20	Iran, Islamic Republic of	3	0.4%
21	Ethiopia	3	0.4%
22	Brazil	3	0.4%
23	Cyprus	3	0.4%
24	Denmark	2	0.2%
25	Argentina	2	0.2%
26	Ukraine	2	0.2%
27	United Kingdom	2	0.2%
28	India	2	0.2%
29	Malaysia	2	0.2%
30	Nicaragua	2	0.2%
31	Norway	1	0.1%
32	Philippines	1	0.1%
33	Poland	1	0.1%
34	Czech Republic	1	0.1%
35	Greece	1	0.1%
36	Hong Kong	1	0.1%