Rank	Countries/Territories	Count	Percent
1	United States	442	39.4%
2	China	268	23.9%
3	Germany	98	8.7%
4	United Kingdom	32	2.8%
5	Netherlands	28	2.5%
6	France	25	2.2%
7	Japan	19	1.7%
8	India	19	1.7%
9	Russia	13	1.2%
10	Singapore	12	1.1%
11	Canada	12	1.1%
12	Bulgaria	10	0.9%
13	Iran, Islamic Republic of	10	0.9%
14	Switzerland	10	0.9%
15	Korea, Republic of	9	0.8%
16	Greece	9	0.8%
17	Australia	9	0.8%
18	Italy	8	0.7%
19	Brazil	7	0.6%
20	Poland	7	0.6%
21	Serbia	5	0.4%
22	Turkey	4	0.4%
23	Argentina	4	0.4%
24	Cyprus	4	0.4%
25	Ireland	4	0.4%
26	Lithuania	3	0.3%
27	Honduras	3	0.3%
28	Philippines	3	0.3%
29	Spain	3	0.3%
30	Sweden	3	0.3%
31	Romania	2	0.2%
32	Senegal	2	0.2%
33	Thailand	2	0.2%
34	Togo	2	0.2%
35	Peru	2	0.2%
36	Norway	2	0.2%
37	Portugal	2	0.2%
38	Ethiopia	2	0.2%
39	Bosnia and Herzegovina	2	0.2%
40	Mexico	2	0.2%
41	Jordan	2	0.2%
42	Kazakhstan	1	0.1%
43	Israel	1	0.1%
44	Morocco	1	0.1%
45	New Zealand	1	0.1%
46	Nigeria	1	0.1%
47	Luxembourg	1	0.1%
48	Malaysia	1	0.1%
49	Libya	1	0.1%
50	Denmark	1	0.1%
51	Egypt	1	0.1%
52	Chile	1	0.1%
53	Hungary	1	0.1%
54	Puerto Rico	1	0.1%
55	Saudi Arabia	1	0.1%
56	Pakistan	1	0.1%
57	Taiwan	1	0.1%
58	Ukraine	1	0.1%
59	Viet Nam	1	0.1%