Rank	Countries/Territories	Count	Percent
1	United States	451	42.3%
2	China	251	23.5%
3	Germany	81	7.6%
4	Canada	48	4.5%
5	India	32	3%
6	Singapore	23	2.2%
7	France	21	2%
8	Australia	17	1.6%
9	Netherlands	13	1.2%
10	United Kingdom	12	1.1%
11	Ireland	11	1%
12	Japan	9	0.8%
13	Korea, Republic of	9	0.8%
14	Pakistan	9	0.8%
15	Russia	8	0.7%
16	Switzerland	7	0.7%
17	Poland	6	0.6%
18	Romania	5	0.5%
19	Spain	4	0.4%
20	Peru	4	0.4%
21	Italy	4	0.4%
22	Cyprus	4	0.4%
23	Ukraine	4	0.4%
24	Thailand	3	0.3%
25	Argentina	3	0.3%
26	Finland	2	0.2%
27	Iran, Islamic Republic of	2	0.2%
28	Belgium	2	0.2%
29	Brazil	2	0.2%
30	Bulgaria	2	0.2%
31	Malaysia	2	0.2%
32	Saudi Arabia	2	0.2%
33	Nepal	2	0.2%
34	United Arab Emirates	2	0.2%
35	Taiwan	1	0.1%
36	Puerto Rico	1	0.1%
37	Sweden	1	0.1%
38	Mexico	1	0.1%
39	Mongolia	1	0.1%
40	Luxembourg	1	0.1%
41	Chile	1	0.1%
42	Colombia	1	0.1%
43	Indonesia	1	0.1%
44	Egypt	1	0.1%