Rank	Countries/Territories	Count	Percent
1	United States	374	31.3%
2	China	246	20.6%
3	Germany	82	6.9%
4	United Kingdom	44	3.7%
5	Japan	32	2.7%
6	Ireland	27	2.3%
7	Spain	25	2.1%
8	Sweden	23	1.9%
9	Israel	23	1.9%
10	Netherlands	23	1.9%
11	Brazil	21	1.8%
12	Mexico	20	1.7%
13	Canada	19	1.6%
14	Australia	15	1.3%
15	Hungary	15	1.3%
16	Cuba	14	1.2%
17	Italy	14	1.2%
18	India	13	1.1%
19	Poland	13	1.1%
20	France	13	1.1%
21	Singapore	13	1.1%
22	Taiwan	11	0.9%
23	Korea, Republic of	11	0.9%
24	Belgium	10	0.8%
25	Turkey	10	0.8%
26	Russia	10	0.8%
27	Morocco	8	0.7%
28	Greece	8	0.7%
29	Cyprus	7	0.6%
30	Czech Republic	6	0.5%
31	Saudi Arabia	6	0.5%
32	Romania	4	0.3%
33	Ecuador	4	0.3%
34	Iran, Islamic Republic of	3	0.3%
35	Iraq	3	0.3%
36	South Africa	3	0.3%
37	Ukraine	2	0.2%
38	United Arab Emirates	2	0.2%
39	Indonesia	2	0.2%
40	Portugal	2	0.2%
41	Hong Kong	2	0.2%
42	Algeria	2	0.2%
43	Colombia	2	0.2%
44	Iceland	1	0.1%
45	Puerto Rico	1	0.1%
46	New Zealand	1	0.1%
47	Norway	1	0.1%
48	Malaysia	1	0.1%
49	Mongolia	1	0.1%
50	Kazakhstan	1	0.1%
51	Slovakia	1	0.1%
52	Switzerland	1	0.1%