Rank	Countries/Territories	Count	Percent
1	United States	556	39.5%
2	China	467	33.2%
3	Germany	124	8.8%
4	Poland	34	2.4%
5	Canada	33	2.3%
6	France	22	1.6%
7	Korea, Republic of	21	1.5%
8	Japan	17	1.2%
9	Russia	17	1.2%
10	Singapore	14	1%
11	United Kingdom	11	0.8%
12	Iran, Islamic Republic of	11	0.8%
13	Hungary	8	0.6%
14	India	8	0.6%
15	Cyprus	8	0.6%
16	Taiwan	8	0.6%
17	Netherlands	7	0.5%
18	Australia	6	0.4%
19	Italy	4	0.3%
20	Spain	4	0.3%
21	Mongolia	4	0.3%
22	Ukraine	3	0.2%
23	South Africa	3	0.2%
24	Egypt	3	0.2%
25	Macao	2	0.1%
26	Malaysia	2	0.1%
27	Sweden	2	0.1%
28	Switzerland	2	0.1%
29	New Zealand	2	0.1%
30	Norway	1	0.1%
31	Greece	1	0.1%
32	Hong Kong	1	0.1%
33	Argentina	1	0.1%
34	Denmark	1	0.1%