Rank	Countries/Territories	Count	Percent
1	United States	489	46.4%
2	China	238	22.6%
3	Germany	92	8.7%
4	Czech Republic	47	4.5%
5	Australia	42	4%
6	France	19	1.8%
7	Japan	19	1.8%
8	Singapore	16	1.5%
9	Netherlands	11	1%
10	Argentina	11	1%
11	India	11	1%
12	United Kingdom	10	0.9%
13	Cyprus	8	0.8%
14	Turkey	5	0.5%
15	Ukraine	4	0.4%
16	Hong Kong	4	0.4%
17	Iran, Islamic Republic of	3	0.3%
18	Ireland	3	0.3%
19	Taiwan	3	0.3%
20	Spain	3	0.3%
21	Sweden	2	0.2%
22	Italy	2	0.2%
23	Latvia	2	0.2%
24	Malaysia	2	0.2%
25	Bangladesh	2	0.2%
26	Canada	2	0.2%
27	Mongolia	1	0.1%
28	Indonesia	1	0.1%
29	Switzerland	1	0.1%
30	Romania	1	0.1%
31	Russia	1	0.1%