Rank	Countries/Territories	Count	Percent
1	United States	670	43.5%
2	China	272	17.6%
3	Germany	124	8%
4	Japan	59	3.8%
5	Russia	56	3.6%
6	Australia	49	3.2%
7	Costa Rica	36	2.3%
8	United Kingdom	34	2.2%
9	Romania	25	1.6%
10	France	23	1.5%
11	Netherlands	21	1.4%
12	Iran, Islamic Republic of	17	1.1%
13	Canada	15	1%
14	Spain	13	0.8%
15	Switzerland	11	0.7%
16	Korea, Republic of	10	0.6%
17	Singapore	9	0.6%
18	Sweden	9	0.6%
19	Italy	8	0.5%
20	Cyprus	8	0.5%
21	Turkey	7	0.5%
22	India	6	0.4%
23	Finland	5	0.3%
24	Czech Republic	4	0.3%
25	Taiwan	4	0.3%
26	Ukraine	3	0.2%
27	Brazil	3	0.2%
28	Austria	3	0.2%
29	Bangladesh	3	0.2%
30	Iraq	3	0.2%
31	Latvia	3	0.2%
32	Ireland	2	0.1%
33	Portugal	2	0.1%
34	South Africa	2	0.1%
35	New Zealand	2	0.1%
36	Belgium	2	0.1%
37	Bosnia and Herzegovina	2	0.1%
38	Argentina	2	0.1%
39	Denmark	2	0.1%
40	Ecuador	2	0.1%
41	Hong Kong	2	0.1%
42	United Arab Emirates	2	0.1%
43	Viet Nam	1	0.1%
44	Hungary	1	0.1%
45	Cuba	1	0.1%
46	Norway	1	0.1%
47	Peru	1	0.1%
48	Poland	1	0.1%
49	Mongolia	1	0.1%