Rank	Countries/Territories	Count	Percent
1	United States	238	37.3%
2	China	206	32.3%
3	Germany	49	7.7%
4	Japan	13	2%
5		12	1.9%
6	Canada	12	1.9%
7	United Kingdom	12	1.9%
8	Singapore	11	1.7%
9	Korea, Republic of	10	1.6%
10	Netherlands	9	1.4%
11	Bulgaria	8	1.3%
12	Hong Kong	7	1.1%
13	South Africa	7	1.1%
14	Poland	4	0.6%
15	Denmark	4	0.6%
16	Cyprus	3	0.5%
17	Czech Republic	3	0.5%
18	India	3	0.5%
19	Spain	3	0.5%
20	Sweden	3	0.5%
21	Morocco	2	0.3%
22	New Zealand	2	0.3%
23	Iran, Islamic Republic of	2	0.3%
24	Latvia	2	0.3%
25	Lithuania	2	0.3%
26	Egypt	2	0.3%
27	Australia	2	0.3%
28	Brazil	2	0.3%
29	France	1	0.2%
30	Mongolia	1	0.2%
31	Switzerland	1	0.2%
32	Syrian Arab Republic	1	0.2%
33	Ukraine	1	0.2%