Rank	Countries/Territories	Count	Percent
1	United States	548	47.6%
2	China	239	20.8%
3	Germany	147	12.8%
4	Canada	42	3.6%
5	France	23	2%
6	United Kingdom	18	1.6%
7	Poland	14	1.2%
8	Norway	11	1%
9	Peru	11	1%
10	Japan	10	0.9%
11	Russia	10	0.9%
12	Singapore	8	0.7%
13	India	8	0.7%
14	Australia	6	0.5%
15	Romania	6	0.5%
16	Ukraine	6	0.5%
17	Switzerland	5	0.4%
18	Netherlands	4	0.3%
19	Korea, Republic of	4	0.3%
20	Latvia	4	0.3%
21	Italy	3	0.3%
22	Hong Kong	3	0.3%
23	Iran, Islamic Republic of	2	0.2%
24	Ireland	2	0.2%
25	South Africa	2	0.2%
26	Sweden	2	0.2%
27	Spain	1	0.1%
28	Taiwan	1	0.1%
29	Lithuania	1	0.1%
30	Malaysia	1	0.1%
31	Portugal	1	0.1%
32	Hungary	1	0.1%
33	Greece	1	0.1%
34	Brazil	1	0.1%
35	Argentina	1	0.1%
36	Cuba	1	0.1%
37	Cyprus	1	0.1%
38	Czech Republic	1	0.1%
39	Egypt	1	0.1%