Rank	Countries/Territories	Count	Percent
1	United States	473	49.1%
2	China	144	15%
3	Germany	64	6.6%
4	France	37	3.8%
5	India	37	3.8%
6	Canada	25	2.6%
7	Netherlands	20	2.1%
8	Japan	14	1.5%
9	Korea, Republic of	14	1.5%
10	Ireland	13	1.3%
11	United Kingdom	11	1.1%
12	South Africa	10	1%
13	Brazil	9	0.9%
14	Cuba	8	0.8%
15	Singapore	7	0.7%
16	Iran, Islamic Republic of	5	0.5%
17	Cyprus	5	0.5%
18	Hong Kong	5	0.5%
19	Malaysia	5	0.5%
20	Portugal	5	0.5%
21	Peru	4	0.4%
22	Australia	4	0.4%
23	Indonesia	3	0.3%
24	Romania	3	0.3%
25	Italy	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	Myanmar	1	0.1%
42	Georgia	1	0.1%
43	Ghana	1	0.1%
44	Belgium	1	0.1%
45		1	0.1%
46	Egypt	1	0.1%
47	Spain	1	0.1%