Rank	Countries/Territories	Count	Percent
1	United States	453	35.9%
2	China	397	31.5%
3	Germany	157	12.4%
4	Australia	39	3.1%
5		29	2.3%
6	Japan	26	2.1%
7	Taiwan	19	1.5%
8	Lithuania	17	1.3%
9	Netherlands	16	1.3%
10	Spain	13	1%
11	France	12	1%
12	Ukraine	10	0.8%
13	India	9	0.7%
14	Cyprus	9	0.7%
15	Canada	8	0.6%
16	Korea, Republic of	8	0.6%
17	Ireland	7	0.6%
18	Singapore	5	0.4%
19	Czech Republic	4	0.3%
20	Indonesia	3	0.2%
21	Mongolia	3	0.2%
22	Switzerland	3	0.2%
23	Turkey	2	0.2%
24	Iran, Islamic Republic of	2	0.2%
25	Denmark	2	0.2%
26	Argentina	2	0.2%
27	Bangladesh	1	0.1%
28	Brazil	1	0.1%
29	Colombia	1	0.1%
30	Italy	1	0.1%
31	Hong Kong	1	0.1%
32	New Zealand	1	0.1%
33	Norway	1	0.1%