Rank	Countries/Territories	Count	Percent
1	United States	283	35%
2	China	148	18.3%
3	Germany	60	7.4%
4	Canada	54	6.7%
5	Sweden	50	6.2%
6	India	33	4.1%
7	Mexico	14	1.7%
8	France	12	1.5%
9	United Kingdom	12	1.5%
10	Singapore	11	1.4%
11	Austria	11	1.4%
12	Iran, Islamic Republic of	10	1.2%
13	Netherlands	10	1.2%
14	Norway	8	1%
15	Russia	7	0.9%
16	Japan	6	0.7%
17	Colombia	6	0.7%
18	South Africa	6	0.7%
19	Switzerland	5	0.6%
20	Afghanistan	5	0.6%
21	Australia	5	0.6%
22	Malaysia	5	0.6%
23	Indonesia	5	0.6%
24	Hong Kong	5	0.6%
25	Pakistan	5	0.6%
26	Brazil	4	0.5%
27	Argentina	4	0.5%
28	Cyprus	4	0.5%
29	Egypt	2	0.2%
30	Poland	2	0.2%
31	Greece	2	0.2%
32	Ireland	2	0.2%
33	Turkey	2	0.2%
34	Ukraine	1	0.1%
35	Romania	1	0.1%
36	Panama	1	0.1%
37	Philippines	1	0.1%
38	El Salvador	1	0.1%
39	Ethiopia	1	0.1%
40	Ghana	1	0.1%
41	Czech Republic	1	0.1%
42	Bosnia and Herzegovina	1	0.1%
43	Bulgaria	1	0.1%