Rank	Countries/Territories	Count	Percent
1	United States	259	33.6%
2	China	250	32.4%
3	Germany	92	11.9%
4	Canada	26	3.4%
5	Korea, Republic of	19	2.5%
6	Poland	19	2.5%
7	Russia	16	2.1%
8	Japan	14	1.8%
9	Singapore	11	1.4%
10	United Kingdom	11	1.4%
11	France	9	1.2%
12	India	8	1%
13	Iran, Islamic Republic of	8	1%
14	Cyprus	4	0.5%
15	Taiwan	4	0.5%
16	Netherlands	3	0.4%
17	New Zealand	2	0.3%
18	Ukraine	2	0.3%
19	Italy	2	0.3%
20	Malaysia	2	0.3%
21	Sweden	2	0.3%
22	Switzerland	2	0.3%
23	Mongolia	1	0.1%
24	Greece	1	0.1%
25	Hong Kong	1	0.1%
26	Denmark	1	0.1%
27	Australia	1	0.1%
28	Norway	1	0.1%