Rank	Countries/Territories	Count	Percent
1	United States	348	40.5%
2	China	290	33.7%
3	Germany	63	7.3%
4	Russia	19	2.2%
5	France	17	2%
6	Canada	15	1.7%
7	Norway	14	1.6%
8	Japan	11	1.3%
9	Netherlands	6	0.7%
10	United Kingdom	6	0.7%
11	Taiwan	6	0.7%
12	Ukraine	5	0.6%
13	Singapore	5	0.6%
14	Sweden	5	0.6%
15	Switzerland	5	0.6%
16	India	5	0.6%
17	Australia	4	0.5%
18	Mongolia	4	0.5%
19	Thailand	4	0.5%
20	Argentina	3	0.3%
21	Cyprus	3	0.3%
22	Ireland	3	0.3%
23	Malaysia	2	0.2%
24	Indonesia	2	0.2%
25	Colombia	2	0.2%
26	Turkey	2	0.2%
27	Tanzania, United Republic of	2	0.2%
28	Philippines	2	0.2%
29	Poland	2	0.2%
30	Nicaragua	1	0.1%
31	Denmark	1	0.1%
32	Brazil	1	0.1%
33	Hong Kong	1	0.1%
34	Mexico	1	0.1%