Rank	Countries/Territories	Count	Percent
1	United States	269	42.7%
2	China	197	31.3%
3	Germany	58	9.2%
4		24	3.8%
5	Singapore	15	2.4%
6	Japan	13	2.1%
7	Korea, Republic of	7	1.1%
8	Russia	7	1.1%
9	Netherlands	5	0.8%
10	Argentina	5	0.8%
11	Cyprus	5	0.8%
12	India	4	0.6%
13	Romania	3	0.5%
14	Canada	2	0.3%
15	France	2	0.3%
16	Australia	2	0.3%
17	Spain	2	0.3%
18	Taiwan	2	0.3%
19	Turkey	2	0.3%
20	Brazil	1	0.2%
21	Greece	1	0.2%
22	Hong Kong	1	0.2%
23	Iran, Islamic Republic of	1	0.2%
24	Ireland	1	0.2%
25	Philippines	1	0.2%