Rank	Countries/Territories	Count	Percent
1	United States	509	50.6%
2	China	225	22.4%
3	Germany	71	7.1%
4	Czech Republic	22	2.2%
5		22	2.2%
6	Canada	20	2%
7	France	19	1.9%
8	Netherlands	17	1.7%
9	Japan	17	1.7%
10	Korea, Republic of	11	1.1%
11	Ukraine	8	0.8%
12	Australia	7	0.7%
13	Hong Kong	6	0.6%
14	United Kingdom	5	0.5%
15	Singapore	5	0.5%
16	Cyprus	4	0.4%
17	Ireland	4	0.4%
18	Russia	4	0.4%
19	India	3	0.3%
20	Indonesia	3	0.3%
21	Argentina	3	0.3%
22	Iraq	2	0.2%
23	Latvia	2	0.2%
24	Luxembourg	2	0.2%
25	Saudi Arabia	2	0.2%
26	Pakistan	2	0.2%
27	Taiwan	2	0.2%
28	Turkey	2	0.2%
29	Switzerland	1	0.1%
30	Nigeria	1	0.1%
31	Mongolia	1	0.1%
32	Denmark	1	0.1%
33	Ecuador	1	0.1%
34	Croatia	1	0.1%