Rank	Countries/Territories	Count	Percent
1	United States	429	44.1%
2	China	178	18.3%
3	Germany	69	7.1%
4	Japan	56	5.8%
5	India	51	5.2%
6	France	38	3.9%
7	Switzerland	26	2.7%
8	Korea, Republic of	23	2.4%
9	Egypt	12	1.2%
10	Cyprus	11	1.1%
11	Netherlands	10	1%
12	Australia	9	0.9%
13	Ireland	8	0.8%
14	Hong Kong	6	0.6%
15	Singapore	5	0.5%
16	Portugal	4	0.4%
17	Iran, Islamic Republic of	4	0.4%
18	Canada	4	0.4%
19	Slovakia	3	0.3%
20	Taiwan	3	0.3%
21	Thailand	2	0.2%
22	United Kingdom	2	0.2%
23	Nepal	2	0.2%
24	Philippines	2	0.2%
25	Argentina	2	0.2%
26	Denmark	2	0.2%
27	Malaysia	2	0.2%
28	Mexico	1	0.1%
29	Libya	1	0.1%
30	Bangladesh	1	0.1%
31	Belgium	1	0.1%
32	Poland	1	0.1%
33	Romania	1	0.1%
34	Russia	1	0.1%
35	Viet Nam	1	0.1%
36	Ukraine	1	0.1%