Rank	Countries/Territories	Count	Percent
1	United States	512	49.9%
2	China	155	15.1%
3	Germany	66	6.4%
4	India	37	3.6%
5	France	37	3.6%
6	Canada	25	2.4%
7	Netherlands	21	2%
8	Korea, Republic of	15	1.5%
9	Ireland	14	1.4%
10	Japan	14	1.4%
11	United Kingdom	14	1.4%
12	Brazil	11	1.1%
13	South Africa	10	1%
14	Cuba	8	0.8%
15	Singapore	7	0.7%
16	Cyprus	6	0.6%
17	Australia	6	0.6%
18	Portugal	5	0.5%
19	Hong Kong	5	0.5%
20	Iran, Islamic Republic of	5	0.5%
21	Malaysia	5	0.5%
22	Peru	4	0.4%
23	Slovenia	3	0.3%
24	Sweden	3	0.3%
25	Turkey	3	0.3%
26	Ukraine	3	0.3%
27	Italy	3	0.3%
28	Romania	3	0.3%
29	Indonesia	3	0.3%
30	Kazakhstan	2	0.2%
31	Viet Nam	2	0.2%
32	Taiwan	2	0.2%
33	Thailand	2	0.2%
34	Philippines	2	0.2%
35	Spain	1	0.1%
36	Nigeria	1	0.1%
37	Norway	1	0.1%
38	Russia	1	0.1%
39	Saudi Arabia	1	0.1%
40	Mexico	1	0.1%
41	Mongolia	1	0.1%
42	Myanmar	1	0.1%
43	Ghana	1	0.1%
44		1	0.1%
45	Georgia	1	0.1%
46	Belgium	1	0.1%
47	Bulgaria	1	0.1%
48	Egypt	1	0.1%