Rank	Countries/Territories	Count	Percent
1	United States	618	39.5%
2	China	535	34.2%
3	Germany	118	7.5%
4	United Kingdom	44	2.8%
5	France	43	2.7%
6	Canada	40	2.6%
7	Japan	33	2.1%
8	Netherlands	17	1.1%
9	Switzerland	13	0.8%
10	Singapore	11	0.7%
11	Libya	10	0.6%
12	Cyprus	9	0.6%
13	Australia	8	0.5%
14	Korea, Republic of	8	0.5%
15	Ukraine	8	0.5%
16	Romania	7	0.4%
17	Hong Kong	7	0.4%
18	India	6	0.4%
19	Argentina	5	0.3%
20	Russia	3	0.2%
21	Mongolia	3	0.2%
22	Norway	3	0.2%
23	Saudi Arabia	2	0.1%
24	South Africa	2	0.1%
25	Taiwan	2	0.1%
26	Egypt	2	0.1%
27	Greece	1	0.1%
28	Bulgaria	1	0.1%
29	Indonesia	1	0.1%
30	Iran, Islamic Republic of	1	0.1%
31	Malaysia	1	0.1%
32	Sweden	1	0.1%
33	Pakistan	1	0.1%
34	Philippines	1	0.1%