Rank	Countries/Territories	Count	Percent
1	United States	254	35.3%
2	China	232	32.2%
3	Germany	73	10.1%
4	Canada	24	3.3%
5	France	20	2.8%
6	Japan	13	1.8%
7	Ukraine	13	1.8%
8	Nigeria	12	1.7%
9	India	11	1.5%
10	Netherlands	8	1.1%
11	Pakistan	7	1%
12	Albania	7	1%
13	Cyprus	6	0.8%
14	Korea, Republic of	6	0.8%
15	Iran, Islamic Republic of	4	0.6%
16	Ireland	3	0.4%
17	Italy	2	0.3%
18	Malaysia	2	0.3%
19	Morocco	2	0.3%
20	United Kingdom	2	0.3%
21	South Africa	2	0.3%
22	Egypt	2	0.3%
23	Finland	2	0.3%
24	Austria	2	0.3%
25	Colombia	1	0.1%
26	Latvia	1	0.1%
27	Luxembourg	1	0.1%
28	Indonesia	1	0.1%
29	Hong Kong	1	0.1%
30	Taiwan	1	0.1%
31	Togo	1	0.1%
32	Viet Nam	1	0.1%
33	Qatar	1	0.1%
34	Russia	1	0.1%
35	Norway	1	0.1%