Rank	Countries/Territories	Count	Percent
1	United States	359	36.2%
2	China	237	23.9%
3	Germany	54	5.4%
4	Italy	44	4.4%
5	India	35	3.5%
6	Russia	25	2.5%
7	Latvia	23	2.3%
8	Japan	21	2.1%
9	Singapore	21	2.1%
10	Ireland	17	1.7%
11	Canada	16	1.6%
12	Taiwan	13	1.3%
13	Switzerland	11	1.1%
14	United Kingdom	11	1.1%
15	Brazil	10	1%
16	Australia	8	0.8%
17	Israel	8	0.8%
18	Sweden	8	0.8%
19	Turkey	7	0.7%
20	Korea, Republic of	5	0.5%
21	Portugal	4	0.4%
22	Czech Republic	4	0.4%
23	Hong Kong	3	0.3%
24	Algeria	3	0.3%
25	Romania	3	0.3%
26	Pakistan	3	0.3%
27	Iran, Islamic Republic of	3	0.3%
28	Thailand	3	0.3%
29	Tunisia	2	0.2%
30	Uganda	2	0.2%
31	Netherlands	2	0.2%
32	Lithuania	2	0.2%
33	Malaysia	2	0.2%
34	Cyprus	2	0.2%
35	Bahrain	2	0.2%
36	Bangladesh	2	0.2%
37	Denmark	2	0.2%
38	Ecuador	1	0.1%
39	France	1	0.1%
40	Iceland	1	0.1%
41	Indonesia	1	0.1%
42	Bulgaria	1	0.1%
43	Mexico	1	0.1%
44	Jordan	1	0.1%
45	Norway	1	0.1%
46	Paraguay	1	0.1%
47	Ukraine	1	0.1%
48	Venezuela, Bolivarian Republic of	1	0.1%
49	Viet Nam	1	0.1%
50	South Africa	1	0.1%
51	Spain	1	0.1%