Rank	Countries/Territories	Count	Percent
1	United States	449	43.3%
2	China	231	22.3%
3	Germany	85	8.2%
4	Romania	64	6.2%
5	Canada	31	3%
6	Japan	30	2.9%
7	Netherlands	19	1.8%
8	Spain	19	1.8%
9	India	19	1.8%
10	Korea, Republic of	14	1.4%
11	United Kingdom	13	1.3%
12	Czech Republic	9	0.9%
13	Malaysia	6	0.6%
14	Italy	6	0.6%
15	Cyprus	5	0.5%
16	Ireland	4	0.4%
17	Hong Kong	3	0.3%
18		3	0.3%
19	Singapore	3	0.3%
20	Taiwan	2	0.2%
21	Pakistan	2	0.2%
22	Nigeria	2	0.2%
23	Jordan	2	0.2%
24	Bangladesh	2	0.2%
25	Hungary	2	0.2%
26	France	2	0.2%
27	Iran, Islamic Republic of	2	0.2%
28	Israel	1	0.1%
29	Belgium	1	0.1%
30	Brazil	1	0.1%
31	Australia	1	0.1%
32	Denmark	1	0.1%
33	Mongolia	1	0.1%
34	Norway	1	0.1%
35	Switzerland	1	0.1%