Rank	Countries/Territories	Count	Percent
1	United States	539	43.3%
2	China	353	28.4%
3	Germany	106	8.5%
4	France	74	5.9%
5		23	1.8%
6	Singapore	16	1.3%
7	Czech Republic	14	1.1%
8	Japan	14	1.1%
9	Korea, Republic of	13	1%
10	Mongolia	13	1%
11	Ukraine	11	0.9%
12	Netherlands	10	0.8%
13	India	7	0.6%
14	Canada	7	0.6%
15	Cyprus	7	0.6%
16	Bangladesh	6	0.5%
17	Ireland	5	0.4%
18	Norway	4	0.3%
19	Latvia	4	0.3%
20	Australia	3	0.2%
21	United Kingdom	3	0.2%
22	Switzerland	2	0.2%
23	Malaysia	2	0.2%
24	Indonesia	2	0.2%
25	Hong Kong	2	0.2%
26	Hungary	1	0.1%
27	Argentina	1	0.1%
28	Taiwan	1	0.1%
29	Romania	1	0.1%
30	Russia	1	0.1%