Rank	Countries/Territories	Count	Percent
1	United States	301	42%
2	China	213	29.7%
3	Germany	53	7.4%
4	France	26	3.6%
5	Australia	16	2.2%
6	Ukraine	12	1.7%
7	Slovakia	11	1.5%
8	Canada	8	1.1%
9	Japan	8	1.1%
10	Denmark	7	1%
11	Czech Republic	6	0.8%
12	Belgium	6	0.8%
13	Korea, Republic of	6	0.8%
14	India	6	0.8%
15	United Kingdom	6	0.8%
16	Netherlands	4	0.6%
17	Romania	4	0.6%
18	Thailand	3	0.4%
19	Cyprus	3	0.4%
20	Brazil	2	0.3%
21	Iran, Islamic Republic of	2	0.3%
22	Hong Kong	2	0.3%
23	Jordan	2	0.3%
24	Spain	2	0.3%
25	Singapore	2	0.3%
26	Russia	1	0.1%
27	Norway	1	0.1%
28	Viet Nam	1	0.1%
29	Mexico	1	0.1%
30	Ireland	1	0.1%
31	Argentina	1	0.1%