Rank	Countries/Territories	Count	Percent
1	United States	613	41.5%
2	China	512	34.7%
3	Germany	113	7.7%
4	Iran, Islamic Republic of	28	1.9%
5		27	1.8%
6	Canada	24	1.6%
7	France	18	1.2%
8	Japan	15	1%
9	Czech Republic	12	0.8%
10	United Kingdom	12	0.8%
11	Netherlands	11	0.7%
12	Singapore	10	0.7%
13	Spain	9	0.6%
14	Italy	7	0.5%
15	Australia	7	0.5%
16	Cyprus	7	0.5%
17	Russia	6	0.4%
18	Saudi Arabia	5	0.3%
19	India	5	0.3%
20	Hong Kong	4	0.3%
21	Greece	3	0.2%
22	Korea, Republic of	3	0.2%
23	Ecuador	3	0.2%
24	Turkey	3	0.2%
25	Ukraine	3	0.2%
26	Sweden	3	0.2%
27	Switzerland	2	0.1%
28	Taiwan	2	0.1%
29	Norway	2	0.1%
30	Brazil	2	0.1%
31	Latvia	2	0.1%
32	Mexico	2	0.1%
33	Mongolia	1	0.1%
34	Pakistan	1	0.1%