Rank	Countries/Territories	Count	Percent
1	United States	427	43.8%
2	China	288	29.5%
3	Germany	116	11.9%
4	France	19	1.9%
5	Netherlands	15	1.5%
6	Canada	14	1.4%
7	Japan	14	1.4%
8	Singapore	13	1.3%
9	Switzerland	12	1.2%
10	Romania	12	1.2%
11	Taiwan	6	0.6%
12	United Kingdom	4	0.4%
13	India	4	0.4%
14	Hong Kong	4	0.4%
15	Cyprus	4	0.4%
16	Ukraine	3	0.3%
17	Hungary	2	0.2%
18	Belgium	2	0.2%
19	Argentina	2	0.2%
20	Indonesia	2	0.2%
21	Iran, Islamic Republic of	2	0.2%
22	Ireland	2	0.2%
23	Mexico	2	0.2%
24	Moldova, Republic of	1	0.1%
25	Mongolia	1	0.1%
26	Korea, Republic of	1	0.1%
27	Australia	1	0.1%
28	Turkey	1	0.1%
29	Spain	1	0.1%
30	Philippines	1	0.1%