Rank	Countries/Territories	Count	Percent
1	United States	424	39.7%
2	China	236	22.1%
3	Germany	86	8.1%
4	India	51	4.8%
5	Canada	31	2.9%
6	Netherlands	24	2.2%
7	Australia	20	1.9%
8	Poland	17	1.6%
9	Japan	17	1.6%
10	Brazil	13	1.2%
11	Egypt	12	1.1%
12	Finland	12	1.1%
13	Korea, Republic of	12	1.1%
14	Czech Republic	11	1%
15	Ireland	10	0.9%
16	Cyprus	9	0.8%
17	Singapore	9	0.8%
18	Taiwan	9	0.8%
19	Turkey	8	0.7%
20	Spain	6	0.6%
21	Italy	6	0.6%
22	Iran, Islamic Republic of	5	0.5%
23	Malaysia	5	0.5%
24	Mexico	5	0.5%
25	Russia	4	0.4%
26	United Kingdom	4	0.4%
27	Switzerland	4	0.4%
28	Sweden	3	0.3%
29	Guatemala	3	0.3%
30	France	2	0.2%
31	Austria	2	0.2%
32	Tajikistan	2	0.2%
33	Norway	2	0.2%
34	Lithuania	1	0.1%
35	Thailand	1	0.1%
36	Venezuela, Bolivarian Republic of	1	0.1%
37	Israel	1	0.1%