Rank	Countries/Territories	Count	Percent
1	United States	345	39.3%
2	China	317	36.1%
3	Germany	72	8.2%
4	Japan	26	3%
5	Russia	24	2.7%
6	France	21	2.4%
7	Greece	13	1.5%
8	Singapore	9	1%
9	United Kingdom	8	0.9%
10	Italy	7	0.8%
11	Hong Kong	5	0.6%
12	India	4	0.5%
13	Argentina	4	0.5%
14	Sweden	4	0.5%
15	Canada	4	0.5%
16	Australia	3	0.3%
17	Brazil	2	0.2%
18	Cyprus	2	0.2%
19	Malaysia	2	0.2%
20	Netherlands	2	0.2%
21	Taiwan	2	0.2%
22	Thailand	1	0.1%
23	Iran, Islamic Republic of	1	0.1%