Rank	Countries/Territories	Count	Percent
1	United States	752	37.9%
2	China	639	32.2%
3	Germany	101	5.1%
4	India	53	2.7%
5	Bulgaria	51	2.6%
6	France	32	1.6%
7	Japan	32	1.6%
8	Canada	30	1.5%
9	Netherlands	25	1.3%
10	Russia	23	1.2%
11	Turkey	18	0.9%
12	Korea, Republic of	18	0.9%
13	United Kingdom	17	0.9%
14	Taiwan	16	0.8%
15	Australia	16	0.8%
16	Iran, Islamic Republic of	15	0.8%
17	Belgium	13	0.7%
18	Sweden	12	0.6%
19	Singapore	10	0.5%
20	Romania	9	0.5%
21	Argentina	9	0.5%
22	Hong Kong	8	0.4%
23	Italy	8	0.4%
24	Denmark	6	0.3%
25	Egypt	5	0.3%
26	Cyprus	5	0.3%
27	Greece	5	0.3%
28	Norway	5	0.3%
29	Iraq	4	0.2%
30	Brazil	4	0.2%
31	Spain	4	0.2%
32	Thailand	4	0.2%
33	Poland	4	0.2%
34	Nigeria	3	0.2%
35	Croatia	3	0.2%
36	Mexico	3	0.2%
37	New Zealand	2	0.1%
38	Ireland	2	0.1%
39	Israel	2	0.1%
40	Peru	2	0.1%
41	Philippines	2	0.1%
42	South Africa	2	0.1%
43	Saudi Arabia	2	0.1%
44	Lao People's Democratic Republic	1	0.1%
45	Malaysia	1	0.1%
46	Pakistan	1	0.1%
47	Hungary	1	0.1%
48	Bahrain	1	0.1%
49	Bangladesh	1	0.1%
50	Czech Republic	1	0.1%
51	Finland	1	0.1%