Rank	Countries/Territories	Count	Percent
1	United States	314	41.4%
2	China	162	21.3%
3	Germany	64	8.4%
4	Canada	43	5.7%
5	India	28	3.7%
6	Singapore	20	2.6%
7	France	15	2%
8	Australia	12	1.6%
9	United Kingdom	10	1.3%
10	Japan	9	1.2%
11	Ireland	8	1.1%
12	Korea, Republic of	7	0.9%
13	Switzerland	7	0.9%
14	Poland	6	0.8%
15	Romania	5	0.7%
16	Spain	4	0.5%
17	Italy	4	0.5%
18	Cyprus	3	0.4%
19	Thailand	3	0.4%
20	Ukraine	2	0.3%
21	United Arab Emirates	2	0.3%
22	Russia	2	0.3%
23	Saudi Arabia	2	0.3%
24	Nepal	2	0.3%
25	Netherlands	2	0.3%
26	Peru	2	0.3%
27	Malaysia	2	0.3%
28	Finland	2	0.3%
29	Belgium	2	0.3%
30	Brazil	2	0.3%
31	Bulgaria	2	0.3%
32	Iran, Islamic Republic of	2	0.3%
33	Chile	1	0.1%
34	Colombia	1	0.1%
35	Argentina	1	0.1%
36	Indonesia	1	0.1%
37	Mexico	1	0.1%
38	Luxembourg	1	0.1%
39	Puerto Rico	1	0.1%
40	Sweden	1	0.1%
41	Taiwan	1	0.1%