Rank	Countries/Territories	Count	Percent
1	United States	459	37.6%
2	China	428	35.1%
3	Germany	81	6.6%
4	Czech Republic	47	3.9%
5	Canada	26	2.1%
6	France	25	2%
7	Russia	21	1.7%
8	Japan	19	1.6%
9	United Kingdom	16	1.3%
10	Netherlands	12	1%
11	Singapore	11	0.9%
12	India	11	0.9%
13	Ireland	9	0.7%
14	Hong Kong	7	0.6%
15	Australia	7	0.6%
16	Switzerland	5	0.4%
17	Taiwan	4	0.3%
18	Mongolia	4	0.3%
19	Cyprus	4	0.3%
20	Latvia	3	0.2%
21	Indonesia	3	0.2%
22	Ukraine	3	0.2%
23	Portugal	2	0.2%
24	Norway	2	0.2%
25	Turkey	2	0.2%
26	Lithuania	2	0.2%
27	Bangladesh	2	0.2%
28	Argentina	1	0.1%
29	Colombia	1	0.1%
30	Iran, Islamic Republic of	1	0.1%
31	Sweden	1	0.1%
32	Poland	1	0.1%