Rank	Countries/Territories	Count	Percent
1	United States	290	45%
2	China	150	23.3%
3	Germany	45	7%
4	France	25	3.9%
5	Canada	19	2.9%
6	India	17	2.6%
7	United Kingdom	11	1.7%
8	Japan	10	1.6%
9	Iran, Islamic Republic of	10	1.6%
10	Australia	9	1.4%
11	Ireland	6	0.9%
12	Netherlands	6	0.9%
13	Korea, Republic of	5	0.8%
14	Israel	5	0.8%
15	Saudi Arabia	4	0.6%
16	Cyprus	3	0.5%
17	Egypt	2	0.3%
18	Ethiopia	2	0.3%
19	Bangladesh	2	0.3%
20	Italy	2	0.3%
21	Singapore	2	0.3%
22	Malaysia	2	0.3%
23	Switzerland	2	0.3%
24	Syrian Arab Republic	2	0.3%
25	Taiwan	2	0.3%
26	Turkey	2	0.3%
27	Ukraine	2	0.3%
28	Zimbabwe	1	0.2%
29	Pakistan	1	0.2%
30	Slovakia	1	0.2%
31	Sri Lanka	1	0.2%
32	Sweden	1	0.2%
33	Hungary	1	0.2%
34	Argentina	1	0.2%
35	Austria	1	0.2%