Rank	Countries/Territories	Count	Percent
1	United States	462	37.7%
2	China	299	24.4%
3	Germany	100	8.2%
4	France	32	2.6%
5	United Kingdom	30	2.5%
6	Canada	28	2.3%
7	Netherlands	28	2.3%
8	Australia	27	2.2%
9	India	23	1.9%
10	Indonesia	21	1.7%
11	Ireland	18	1.5%
12	Iran, Islamic Republic of	17	1.4%
13	Japan	16	1.3%
14	Portugal	11	0.9%
15	Turkey	10	0.8%
16	Russia	10	0.8%
17	Senegal	10	0.8%
18	Hong Kong	9	0.7%
19	Bulgaria	8	0.7%
20	Singapore	8	0.7%
21	Korea, Republic of	6	0.5%
22	Sweden	5	0.4%
23	Israel	3	0.2%
24	Italy	3	0.2%
25	Malaysia	3	0.2%
26	Peru	3	0.2%
27	Argentina	3	0.2%
28	Cyprus	3	0.2%
29	Czech Republic	2	0.2%
30	Egypt	2	0.2%
31	Iraq	2	0.2%
32	New Zealand	2	0.2%
33	Qatar	2	0.2%
34	Nepal	2	0.2%
35	Thailand	2	0.2%
36	Viet Nam	2	0.2%
37	Virgin Islands, U.S.	2	0.2%
38	Switzerland	1	0.1%
39	Philippines	1	0.1%
40	Spain	1	0.1%
41	Mexico	1	0.1%
42	Moldova, Republic of	1	0.1%
43	Mongolia	1	0.1%
44	Latvia	1	0.1%
45	Iceland	1	0.1%
46	Finland	1	0.1%
47	Austria	1	0.1%