Rank	Countries/Territories	Count	Percent
1	United States	311	33.8%
2	China	234	25.4%
3	Germany	91	9.9%
4	United Kingdom	32	3.5%
5	Netherlands	28	3%
6	France	21	2.3%
7	India	19	2.1%
8	Russia	13	1.4%
9	Singapore	11	1.2%
10	Switzerland	10	1.1%
11	Iran, Islamic Republic of	10	1.1%
12	Bulgaria	10	1.1%
13	Canada	10	1.1%
14	Greece	9	1%
15	Japan	9	1%
16	Australia	8	0.9%
17	Brazil	7	0.8%
18	Italy	7	0.8%
19	Poland	7	0.8%
20	Korea, Republic of	6	0.7%
21	Serbia	5	0.5%
22	Ireland	4	0.4%
23	Lithuania	3	0.3%
24	Cyprus	3	0.3%
25	Honduras	3	0.3%
26	Turkey	3	0.3%
27	Spain	3	0.3%
28	Sweden	3	0.3%
29	Philippines	3	0.3%
30	Senegal	2	0.2%
31	Portugal	2	0.2%
32	Peru	2	0.2%
33	Thailand	2	0.2%
34	Ethiopia	2	0.2%
35	Argentina	2	0.2%
36	Bosnia and Herzegovina	2	0.2%
37	Mexico	2	0.2%
38	Norway	2	0.2%
39	Jordan	2	0.2%
40	Kazakhstan	1	0.1%
41	Libya	1	0.1%
42	Israel	1	0.1%
43	Pakistan	1	0.1%
44	New Zealand	1	0.1%
45	Nigeria	1	0.1%
46	Morocco	1	0.1%
47	Luxembourg	1	0.1%
48	Malaysia	1	0.1%
49	Denmark	1	0.1%
50	Egypt	1	0.1%
51	Chile	1	0.1%
52	Hungary	1	0.1%
53	Ukraine	1	0.1%
54	Taiwan	1	0.1%
55	Romania	1	0.1%
56	Saudi Arabia	1	0.1%
57	Viet Nam	1	0.1%