Rank	Countries/Territories	Count	Percent
1	United States	302	37.8%
2	China	290	36.3%
3	Germany	76	9.5%
4	Japan	24	3%
5	Singapore	15	1.9%
6	India	14	1.8%
7	France	10	1.3%
8	Korea, Republic of	10	1.3%
9	Ireland	9	1.1%
10	Russia	8	1%
11	Netherlands	8	1%
12	Iraq	6	0.8%
13	Canada	5	0.6%
14	Australia	3	0.4%
15	Bulgaria	2	0.3%
16	Argentina	2	0.3%
17	Cyprus	2	0.3%
18	Iran, Islamic Republic of	2	0.3%
19	Portugal	2	0.3%
20	South Africa	2	0.3%
21	Switzerland	2	0.3%
22	United Kingdom	1	0.1%
23	Italy	1	0.1%
24	Malaysia	1	0.1%
25	Iceland	1	0.1%