Rank	Countries/Territories	Count	Percent
1	United States	315	41.8%
2	China	169	22.4%
3	Germany	120	15.9%
4	Canada	25	3.3%
5	France	18	2.4%
6	Norway	11	1.5%
7	Poland	11	1.5%
8	United Kingdom	11	1.5%
9	Singapore	8	1.1%
10	Russia	7	0.9%
11	Japan	6	0.8%
12	India	6	0.8%
13	Romania	5	0.7%
14	Korea, Republic of	4	0.5%
15	Latvia	4	0.5%
16	Switzerland	4	0.5%
17	Peru	3	0.4%
18	Sweden	2	0.3%
19	Ukraine	2	0.3%
20	Netherlands	2	0.3%
21	South Africa	2	0.3%
22	Iran, Islamic Republic of	2	0.3%
23	Ireland	2	0.3%
24	Australia	2	0.3%
25	Brazil	1	0.1%
26	Cuba	1	0.1%
27	Cyprus	1	0.1%
28	Czech Republic	1	0.1%
29	Egypt	1	0.1%
30	Italy	1	0.1%
31	Greece	1	0.1%
32	Hong Kong	1	0.1%
33	Hungary	1	0.1%
34	Spain	1	0.1%
35	Taiwan	1	0.1%
36	Malaysia	1	0.1%