Rank	Countries/Territories	Count	Percent
1	United States	388	36.7%
2	China	376	35.6%
3	Germany	70	6.6%
4	Korea, Republic of	25	2.4%
5	India	18	1.7%
6	Japan	17	1.6%
7	France	16	1.5%
8	Romania	16	1.5%
9	Switzerland	13	1.2%
10	Netherlands	10	0.9%
11	Canada	10	0.9%
12	Argentina	9	0.9%
13	Portugal	8	0.8%
14	Poland	7	0.7%
15	Austria	6	0.6%
16	Australia	5	0.5%
17	Ireland	5	0.5%
18	Mexico	5	0.5%
19	Ukraine	5	0.5%
20	Turkey	4	0.4%
21	San Marino	4	0.4%
22	Italy	4	0.4%
23	Cyprus	4	0.4%
24	Czech Republic	4	0.4%
25	Slovakia	3	0.3%
26	Spain	2	0.2%
27	Sweden	2	0.2%
28	Russia	2	0.2%
29	Mauritius	2	0.2%
30	Palestine, State of	2	0.2%
31	Brazil	2	0.2%
32	Iran, Islamic Republic of	2	0.2%
33	Hong Kong	2	0.2%
34	Zambia	2	0.2%
35	United Kingdom	1	0.1%
36	Bangladesh	1	0.1%
37	Belize	1	0.1%
38	Norway	1	0.1%
39	Malaysia	1	0.1%
40	Singapore	1	0.1%
41	Tunisia	1	0.1%