Rank	Countries/Territories	Count	Percent
1	United States	316	35.5%
2	China	214	24%
3	Germany	123	13.8%
4	Japan	19	2.1%
5	Brazil	17	1.9%
6	Netherlands	15	1.7%
7	Norway	15	1.7%
8	Korea, Republic of	14	1.6%
9	Romania	13	1.5%
10	Canada	13	1.5%
11	Australia	12	1.3%
12	United Kingdom	11	1.2%
13	France	10	1.1%
14	India	10	1.1%
15	Belgium	9	1%
16	Singapore	8	0.9%
17	Switzerland	8	0.9%
18	Poland	7	0.8%
19	Turkey	6	0.7%
20	Cyprus	5	0.6%
21	Spain	4	0.4%
22	Russia	4	0.4%
23	Ireland	3	0.3%
24	Mexico	3	0.3%
25	Denmark	3	0.3%
26	Bulgaria	3	0.3%
27	Taiwan	3	0.3%
28	Thailand	2	0.2%
29	United Arab Emirates	2	0.2%
30	Iran, Islamic Republic of	2	0.2%
31	Ghana	2	0.2%
32	Mongolia	2	0.2%
33	Israel	2	0.2%
34	Italy	1	0.1%
35	Sri Lanka	1	0.1%
36	Sweden	1	0.1%
37	Slovakia	1	0.1%
38	Portugal	1	0.1%
39	Hong Kong	1	0.1%
40	Czech Republic	1	0.1%
41	Colombia	1	0.1%
42	Argentina	1	0.1%
43	Bangladesh	1	0.1%
44	Ukraine	1	0.1%