Rank	Countries/Territories	Count	Percent
1	United States	342	35.3%
2	China	318	32.8%
3	Germany	144	14.9%
4	Netherlands	38	3.9%
5	France	20	2.1%
6	Japan	20	2.1%
7	Singapore	12	1.2%
8	Korea, Republic of	10	1%
9	Cyprus	7	0.7%
10	Bulgaria	5	0.5%
11	Russia	5	0.5%
12	Turkey	5	0.5%
13	Iceland	4	0.4%
14	India	4	0.4%
15	Canada	3	0.3%
16	Australia	3	0.3%
17	Uzbekistan	3	0.3%
18	South Africa	3	0.3%
19	Spain	2	0.2%
20	Morocco	2	0.2%
21	Philippines	2	0.2%
22	Taiwan	2	0.2%
23	Colombia	2	0.2%
24	Cuba	2	0.2%
25	Iran, Islamic Republic of	2	0.2%
26	Hong Kong	2	0.2%
27	Ghana	1	0.1%
28	Mongolia	1	0.1%
29	Argentina	1	0.1%
30	Bangladesh	1	0.1%
31	Tanzania, United Republic of	1	0.1%
32	United Kingdom	1	0.1%
33	Switzerland	1	0.1%