Rank	Countries/Territories	Count	Percent
1	United States	340	39.8%
2	China	269	31.5%
3	Germany	102	11.9%
4	United Kingdom	21	2.5%
5	France	20	2.3%
6	Russia	20	2.3%
7	Singapore	9	1.1%
8	Australia	8	0.9%
9	Turkey	8	0.9%
10	Ukraine	7	0.8%
11	Belgium	7	0.8%
12	Canada	7	0.8%
13	Cyprus	7	0.8%
14	Netherlands	7	0.8%
15	Iran, Islamic Republic of	4	0.5%
16	Denmark	3	0.4%
17	Argentina	2	0.2%
18	Hong Kong	2	0.2%
19	India	2	0.2%
20	Japan	2	0.2%
21	Kenya	2	0.2%
22	Mexico	2	0.2%
23	Philippines	2	0.2%
24	Taiwan	1	0.1%