Rank	Countries/Territories	Count	Percent
1	United States	546	41.2%
2	China	462	34.8%
3	Germany	136	10.3%
4	France	37	2.8%
5	Japan	21	1.6%
6	Netherlands	18	1.4%
7	Singapore	13	1%
8	Russia	12	0.9%
9	United Kingdom	12	0.9%
10	Australia	9	0.7%
11	Norway	8	0.6%
12	Canada	7	0.5%
13	Sweden	6	0.5%
14	Ireland	5	0.4%
15	Argentina	4	0.3%
16	Cyprus	4	0.3%
17	Ukraine	4	0.3%
18	India	3	0.2%
19	Latvia	3	0.2%
20	Lithuania	3	0.2%
21	Malaysia	2	0.2%
22	Iran, Islamic Republic of	2	0.2%
23	Israel	2	0.2%
24	Denmark	2	0.2%
25	Egypt	2	0.2%
26	Mongolia	1	0.1%
27	Switzerland	1	0.1%
28	Spain	1	0.1%