Rank	Countries/Territories	Count	Percent
1	United States	341	40.7%
2	China	271	32.3%
3	Germany	93	11.1%
4	Japan	18	2.1%
5	Australia	12	1.4%
6	Korea, Republic of	11	1.3%
7	Iran, Islamic Republic of	11	1.3%
8	United Kingdom	9	1.1%
9	India	9	1.1%
10	Lithuania	7	0.8%
11	Spain	7	0.8%
12	Canada	5	0.6%
13	Cyprus	4	0.5%
14	Taiwan	4	0.5%
15	Singapore	3	0.4%
16	Czech Republic	3	0.4%
17	Colombia	3	0.4%
18	Netherlands	3	0.4%
19	Norway	3	0.4%
20	France	2	0.2%
21	Hong Kong	2	0.2%
22	Argentina	2	0.2%
23	Belgium	2	0.2%
24	Turkey	2	0.2%
25	Ukraine	2	0.2%
26	Switzerland	2	0.2%
27	Italy	2	0.2%
28	Thailand	1	0.1%
29	Venezuela, Bolivarian Republic of	1	0.1%
30	Egypt	1	0.1%
31	Romania	1	0.1%
32	Russia	1	0.1%