Rank	Countries/Territories	Count	Percent
1	United States	648	36.8%
2	China	308	17.5%
3	Germany	129	7.3%
4	Canada	58	3.3%
5	United Kingdom	51	2.9%
6	Australia	45	2.6%
7	Cuba	38	2.2%
8	India	35	2%
9	France	33	1.9%
10	Brazil	29	1.6%
11	Spain	25	1.4%
12	Ireland	22	1.3%
13	Korea, Republic of	22	1.3%
14	Bulgaria	21	1.2%
15	Colombia	19	1.1%
16	Japan	19	1.1%
17	Romania	19	1.1%
18	Netherlands	15	0.9%
19	Italy	12	0.7%
20	Denmark	11	0.6%
21	Cyprus	10	0.6%
22	Lithuania	10	0.6%
23	Mexico	9	0.5%
24	Nigeria	9	0.5%
25	Ukraine	9	0.5%
26	Slovakia	7	0.4%
27	Indonesia	7	0.4%
28	Israel	6	0.3%
29	Czech Republic	6	0.3%
30	Bangladesh	6	0.3%
31	Poland	6	0.3%
32	Taiwan	6	0.3%
33	Russia	6	0.3%
34	Viet Nam	5	0.3%
35	South Africa	5	0.3%
36	Sweden	5	0.3%
37	Switzerland	5	0.3%
38	Austria	5	0.3%
39	Albania	5	0.3%
40	Zimbabwe	5	0.3%
41	Ecuador	4	0.2%
42	Iran, Islamic Republic of	4	0.2%
43	Morocco	4	0.2%
44	Malaysia	4	0.2%
45	Mauritius	4	0.2%
46	Mozambique	3	0.2%
47	Turkey	3	0.2%
48	Hong Kong	3	0.2%
49	Finland	3	0.2%
50	Guyana	2	0.1%
51	Honduras	2	0.1%
52	Ethiopia	2	0.1%
53	Argentina	2	0.1%
54	Tunisia	2	0.1%
55	Philippines	2	0.1%
56	Singapore	2	0.1%
57	Nepal	2	0.1%
58	New Zealand	2	0.1%
59	Norway	2	0.1%
60	Pakistan	2	0.1%
61	Peru	1	0.1%
62	Saudi Arabia	1	0.1%
63	Serbia	1	0.1%
64	Qatar	1	0.1%
65	Uganda	1	0.1%
66	Zambia	1	0.1%
67	Armenia	1	0.1%
68	Barbados	1	0.1%
69	Botswana	1	0.1%
70	Chile	1	0.1%
71	Hungary	1	0.1%
72	Jamaica	1	0.1%
73	Kenya	1	0.1%
74	Latvia	1	0.1%