Rank	Countries/Territories	Count	Percent
1	United States	375	33%
2	China	350	30.8%
3	Germany	98	8.6%
4	Japan	85	7.5%
5	Canada	43	3.8%
6		43	3.8%
7	Singapore	34	3%
8	France	25	2.2%
9	Netherlands	13	1.1%
10	Norway	10	0.9%
11	Iran, Islamic Republic of	7	0.6%
12	Cyprus	7	0.6%
13	United Kingdom	6	0.5%
14	Poland	4	0.4%
15	Australia	4	0.4%
16	Korea, Republic of	3	0.3%
17	Latvia	3	0.3%
18	Mongolia	3	0.3%
19	Hong Kong	3	0.3%
20	Russia	3	0.3%
21	Ukraine	3	0.3%
22	Turkey	2	0.2%
23	Sweden	2	0.2%
24	Italy	2	0.2%
25	Pakistan	2	0.2%
26	Ghana	2	0.2%
27	Bangladesh	2	0.2%
28	Bulgaria	1	0.1%
29	India	1	0.1%
30	Spain	1	0.1%
31	Thailand	1	0.1%