Rank	Countries/Territories	Count	Percent
1	United States	508	38.2%
2	China	254	19.1%
3	Germany	67	5%
4	Ireland	52	3.9%
5	United Kingdom	50	3.8%
6	Canada	40	3%
7	India	38	2.9%
8	Netherlands	38	2.9%
9	Japan	35	2.6%
10	Australia	24	1.8%
11	Russia	23	1.7%
12	Singapore	15	1.1%
13	France	14	1.1%
14	Italy	12	0.9%
15	Hong Kong	12	0.9%
16	Romania	12	0.9%
17	Sweden	9	0.7%
18	Egypt	9	0.7%
19	Switzerland	8	0.6%
20	Turkey	7	0.5%
21	Poland	7	0.5%
22	Iran, Islamic Republic of	7	0.5%
23	Iraq	7	0.5%
24	Philippines	6	0.5%
25	Taiwan	6	0.5%
26	Belgium	5	0.4%
27	Bulgaria	4	0.3%
28	Denmark	4	0.3%
29	Korea, Republic of	4	0.3%
30	Spain	4	0.3%
31	Ukraine	3	0.2%
32	Thailand	3	0.2%
33	Mexico	3	0.2%
34	New Zealand	3	0.2%
35	Cyprus	3	0.2%
36	Brazil	3	0.2%
37	Ghana	3	0.2%
38	Greece	2	0.2%
39	Indonesia	2	0.2%
40	Finland	2	0.2%
41	Nigeria	2	0.2%
42	Lithuania	2	0.2%
43	Israel	2	0.2%
44	Jamaica	2	0.2%
45	Tanzania, United Republic of	2	0.2%
46	Portugal	2	0.2%
47	Puerto Rico	2	0.2%
48	Saudi Arabia	1	0.1%
49	Kazakhstan	1	0.1%
50	Malaysia	1	0.1%
51	Morocco	1	0.1%
52	Pakistan	1	0.1%
53	Ethiopia	1	0.1%
54	Argentina	1	0.1%