Rank	Countries/Territories	Count	Percent
1	United States	322	33.9%
2	China	312	32.8%
3	Germany	70	7.4%
4	Australia	41	4.3%
5	Netherlands	39	4.1%
6	Singapore	22	2.3%
7	France	18	1.9%
8	Canada	14	1.5%
9	Japan	13	1.4%
10	Korea, Republic of	12	1.3%
11	Iran, Islamic Republic of	12	1.3%
12	India	9	0.9%
13	Malaysia	7	0.7%
14	Lithuania	6	0.6%
15	Cyprus	5	0.5%
16	Brazil	5	0.5%
17	Switzerland	5	0.5%
18	Saudi Arabia	4	0.4%
19	Syrian Arab Republic	3	0.3%
20	Taiwan	3	0.3%
21	Sweden	3	0.3%
22	Argentina	3	0.3%
23	Czech Republic	3	0.3%
24	Iraq	2	0.2%
25	Ghana	2	0.2%
26	Israel	2	0.2%
27	Romania	2	0.2%
28	Russia	2	0.2%
29	Mongolia	1	0.1%
30	Pakistan	1	0.1%
31	Philippines	1	0.1%
32	Spain	1	0.1%
33	Thailand	1	0.1%
34	Greece	1	0.1%
35	Indonesia	1	0.1%
36	Ireland	1	0.1%
37	Algeria	1	0.1%