Rank	Countries/Territories	Count	Percent
1	United States	452	47.3%
2	China	239	25%
3	Germany	92	9.6%
4	Japan	52	5.4%
5	Netherlands	19	2%
6	Singapore	16	1.7%
7	Russia	12	1.3%
8	Canada	8	0.8%
9	Bulgaria	7	0.7%
10	Australia	6	0.6%
11	South Africa	6	0.6%
12	France	4	0.4%
13	Austria	4	0.4%
14	Hong Kong	4	0.4%
15	Korea, Republic of	3	0.3%
16	Cyprus	3	0.3%
17	Czech Republic	3	0.3%
18	Argentina	3	0.3%
19	Switzerland	3	0.3%
20	Turkey	3	0.3%
21	Nigeria	2	0.2%
22	United Kingdom	2	0.2%
23	Albania	2	0.2%
24	Bolivia, Plurinational State of	2	0.2%
25	Cote D'ivoire	2	0.2%
26	Hungary	2	0.2%
27	India	1	0.1%
28	Mauritius	1	0.1%
29	Viet Nam	1	0.1%
30	Romania	1	0.1%
31	Ukraine	1	0.1%