Rank	Countries/Territories	Count	Percent
1	United States	456	38.1%
2	China	410	34.2%
3	Germany	163	13.6%
4	Japan	29	2.4%
5	India	16	1.3%
6	Norway	13	1.1%
7	France	11	0.9%
8	Canada	10	0.8%
9	Cyprus	10	0.8%
10	Uzbekistan	9	0.8%
11	Netherlands	9	0.8%
12	Taiwan	6	0.5%
13	Poland	6	0.5%
14	Romania	4	0.3%
15	Switzerland	4	0.3%
16	United Kingdom	4	0.3%
17	Hong Kong	4	0.3%
18	Iran, Islamic Republic of	3	0.3%
19	Australia	3	0.3%
20	Bangladesh	3	0.3%
21	Belgium	3	0.3%
22	Italy	3	0.3%
23	Malaysia	3	0.3%
24	Korea, Republic of	2	0.2%
25	Singapore	2	0.2%
26	South Africa	2	0.2%
27	Argentina	2	0.2%
28	Ireland	2	0.2%
29	Indonesia	2	0.2%
30	Jordan	1	0.1%
31	Algeria	1	0.1%
32	Mexico	1	0.1%
33	Ukraine	1	0.1%