Rank	Countries/Territories	Count	Percent
1	United States	416	37.1%
2	China	210	18.7%
3	Germany	60	5.3%
4	Ireland	48	4.3%
5	United Kingdom	42	3.7%
6	Canada	40	3.6%
7	Netherlands	36	3.2%
8	India	34	3%
9	Japan	30	2.7%
10	Australia	19	1.7%
11	Russia	19	1.7%
12	France	14	1.2%
13	Romania	12	1.1%
14	Hong Kong	11	1%
15	Italy	10	0.9%
16	Egypt	9	0.8%
17	Singapore	9	0.8%
18	Sweden	8	0.7%
19	Switzerland	8	0.7%
20	Iran, Islamic Republic of	7	0.6%
21	Iraq	7	0.6%
22	Poland	7	0.6%
23	Taiwan	6	0.5%
24	Philippines	6	0.5%
25	Turkey	6	0.5%
26	Bulgaria	4	0.4%
27	Belgium	3	0.3%
28	Brazil	3	0.3%
29	Cyprus	3	0.3%
30	Ghana	3	0.3%
31	Thailand	3	0.3%
32	Spain	2	0.2%
33	Tanzania, United Republic of	2	0.2%
34	Greece	2	0.2%
35	Indonesia	2	0.2%
36	Portugal	2	0.2%
37	Puerto Rico	2	0.2%
38	Nigeria	2	0.2%
39	Jamaica	2	0.2%
40	Korea, Republic of	2	0.2%
41	Lithuania	1	0.1%
42	Malaysia	1	0.1%
43	Mexico	1	0.1%
44	Morocco	1	0.1%
45	Israel	1	0.1%
46	Pakistan	1	0.1%
47	Kazakhstan	1	0.1%
48	New Zealand	1	0.1%
49	Denmark	1	0.1%
50	Ethiopia	1	0.1%
51	Saudi Arabia	1	0.1%