Rank	Countries/Territories	Count	Percent
1	United States	351	37.9%
2	China	293	31.7%
3	Germany	128	13.8%
4	Russia	31	3.4%
5	Netherlands	22	2.4%
6	France	18	1.9%
7	Korea, Republic of	18	1.9%
8	Sweden	9	1%
9	India	7	0.8%
10	United Kingdom	6	0.6%
11	Spain	4	0.4%
12	Japan	4	0.4%
13	Denmark	4	0.4%
14	Egypt	3	0.3%
15	Australia	3	0.3%
16	Malaysia	3	0.3%
17	Singapore	3	0.3%
18	Mongolia	2	0.2%
19	Canada	2	0.2%
20	Cyprus	2	0.2%
21	Hong Kong	2	0.2%
22	Iran, Islamic Republic of	2	0.2%
23	Ireland	2	0.2%
24	Norway	1	0.1%
25	Philippines	1	0.1%
26	Portugal	1	0.1%
27	Switzerland	1	0.1%
28	Tunisia	1	0.1%
29	Turkey	1	0.1%