Rank	Countries/Territories	Count	Percent
1	United States	372	33.9%
2	China	200	18.2%
3	Germany	75	6.8%
4	India	44	4%
5	United Kingdom	38	3.5%
6	Kazakhstan	27	2.5%
7	Denmark	24	2.2%
8	Turkey	23	2.1%
9	France	22	2%
10	Taiwan	20	1.8%
11	Netherlands	19	1.7%
12	Ireland	18	1.6%
13	Australia	17	1.5%
14	Canada	17	1.5%
15	Russia	13	1.2%
16	Singapore	13	1.2%
17	Japan	12	1.1%
18	Spain	10	0.9%
19	Romania	10	0.9%
20	Iran, Islamic Republic of	9	0.8%
21	Korea, Republic of	9	0.8%
22	Belgium	8	0.7%
23	Ukraine	8	0.7%
24	Indonesia	7	0.6%
25	Colombia	6	0.5%
26	Brazil	5	0.5%
27	Hungary	5	0.5%
28	Greece	5	0.5%
29	Poland	5	0.5%
30	Morocco	4	0.4%
31	Saudi Arabia	4	0.4%
32	Egypt	4	0.4%
33	Lithuania	4	0.4%
34	Mexico	4	0.4%
35	Malaysia	3	0.3%
36	Jordan	3	0.3%
37	Czech Republic	3	0.3%
38	Hong Kong	3	0.3%
39	Tanzania, United Republic of	3	0.3%
40	Viet Nam	3	0.3%
41	Ghana	2	0.2%
42	Ecuador	2	0.2%
43	Italy	2	0.2%
44	Mauritania	2	0.2%
45	New Zealand	2	0.2%
46	Oman	1	0.1%
47	Pakistan	1	0.1%
48	Mongolia	1	0.1%
49	Latvia	1	0.1%
50	Cyprus	1	0.1%
51	Angola	1	0.1%
52	Thailand	1	0.1%
53	Syrian Arab Republic	1	0.1%