Rank	Countries/Territories	Count	Percent
1	United States	351	36.8%
2	China	281	29.4%
3	Germany	152	15.9%
4	Japan	55	5.8%
5	Netherlands	24	2.5%
6	France	24	2.5%
7	Lithuania	12	1.3%
8	Russia	9	0.9%
9	Singapore	6	0.6%
10	Cyprus	6	0.6%
11	Taiwan	6	0.6%
12	Argentina	4	0.4%
13	Australia	4	0.4%
14	Korea, Republic of	3	0.3%
15	United Kingdom	3	0.3%
16	Turkey	2	0.2%
17	Hong Kong	2	0.2%
18	South Africa	2	0.2%
19	Mongolia	2	0.2%
20	Romania	1	0.1%
21	Spain	1	0.1%
22	Switzerland	1	0.1%
23	Iran, Islamic Republic of	1	0.1%
24	Latvia	1	0.1%
25	Canada	1	0.1%
26	Viet Nam	1	0.1%