Rank	Countries/Territories	Count	Percent
1	United States	309	45.8%
2	China	107	15.9%
3	Germany	70	10.4%
4	France	22	3.3%
5	Canada	20	3%
6	Russia	16	2.4%
7	Singapore	16	2.4%
8	Australia	13	1.9%
9	South Africa	11	1.6%
10	Egypt	10	1.5%
11	Netherlands	9	1.3%
12	Saudi Arabia	8	1.2%
13	Iran, Islamic Republic of	8	1.2%
14	United Kingdom	6	0.9%
15	Switzerland	6	0.9%
16	Taiwan	6	0.9%
17	Japan	5	0.7%
18	Indonesia	5	0.7%
19	Ireland	4	0.6%
20	Cyprus	4	0.6%
21	Argentina	3	0.4%
22	India	3	0.4%
23	Greece	2	0.3%
24	Poland	2	0.3%
25	Togo	2	0.3%
26	Latvia	2	0.3%
27	Yemen	1	0.1%
28	Ukraine	1	0.1%
29	Korea, Republic of	1	0.1%
30	Hong Kong	1	0.1%
31	Hungary	1	0.1%
32	Bangladesh	1	0.1%