Rank	Countries/Territories	Count	Percent
1	United States	444	49.6%
2	China	129	14.4%
3	Germany	57	6.4%
4	France	37	4.1%
5	India	36	4%
6	Canada	19	2.1%
7	Netherlands	19	2.1%
8	Ireland	13	1.5%
9	Japan	12	1.3%
10	United Kingdom	11	1.2%
11	South Africa	10	1.1%
12	Korea, Republic of	10	1.1%
13	Brazil	9	1%
14	Cuba	8	0.9%
15	Singapore	7	0.8%
16	Iran, Islamic Republic of	5	0.6%
17	Cyprus	5	0.6%
18	Hong Kong	5	0.6%
19	Malaysia	5	0.6%
20	Portugal	5	0.6%
21	Peru	4	0.4%
22	Romania	3	0.3%
23	Italy	3	0.3%
24	Indonesia	3	0.3%
25	Australia	3	0.3%
26	Slovenia	3	0.3%
27	Sweden	3	0.3%
28	Turkey	3	0.3%
29	Ukraine	3	0.3%
30	Taiwan	2	0.2%
31	Thailand	2	0.2%
32	Viet Nam	2	0.2%
33	Kazakhstan	2	0.2%
34	Philippines	2	0.2%
35	Nigeria	1	0.1%
36	Norway	1	0.1%
37	Russia	1	0.1%
38	Saudi Arabia	1	0.1%
39	Mexico	1	0.1%
40	Mongolia	1	0.1%
41	Belgium	1	0.1%
42		1	0.1%
43	Egypt	1	0.1%
44	Georgia	1	0.1%
45	Ghana	1	0.1%
46	Spain	1	0.1%