Rank	Countries/Territories	Count	Percent
1	United States	328	39.8%
2	China	258	31.3%
3	Germany	87	10.5%
4	France	29	3.5%
5	Canada	17	2.1%
6	Japan	17	2.1%
7	Netherlands	11	1.3%
8	Slovakia	11	1.3%
9	Korea, Republic of	7	0.8%
10	Ukraine	6	0.7%
11	Singapore	6	0.7%
12	Lithuania	5	0.6%
13	India	5	0.6%
14	Australia	5	0.6%
15	Cyprus	4	0.5%
16	Egypt	4	0.5%
17	Iran, Islamic Republic of	3	0.4%
18	United Kingdom	3	0.4%
19	Pakistan	2	0.2%
20	Romania	2	0.2%
21	Taiwan	2	0.2%
22	Italy	2	0.2%
23	New Zealand	2	0.2%
24	Denmark	2	0.2%
25	Argentina	1	0.1%
26	Hong Kong	1	0.1%
27	Norway	1	0.1%
28	Malaysia	1	0.1%
29	Mongolia	1	0.1%
30	Sweden	1	0.1%
31	Switzerland	1	0.1%