Rank	Countries/Territories	Count	Percent
1	United States	340	44.1%
2	China	123	16%
3	Germany	59	7.7%
4	India	30	3.9%
5		29	3.8%
6	Russia	17	2.2%
7	Japan	15	1.9%
8	Canada	15	1.9%
9	France	13	1.7%
10	Bulgaria	11	1.4%
11	Singapore	11	1.4%
12	Australia	10	1.3%
13	Netherlands	9	1.2%
14	Malaysia	8	1%
15	Thailand	8	1%
16	Brazil	7	0.9%
17	Korea, Republic of	6	0.8%
18	Italy	5	0.6%
19	Hong Kong	5	0.6%
20	Turkey	5	0.6%
21	United Kingdom	4	0.5%
22	Indonesia	4	0.5%
23	Iran, Islamic Republic of	3	0.4%
24	Hungary	3	0.4%
25	Viet Nam	3	0.4%
26	Spain	3	0.4%
27	Colombia	2	0.3%
28	Cyprus	2	0.3%
29	Kenya	2	0.3%
30	Malta	2	0.3%
31	Mexico	2	0.3%
32	Pakistan	2	0.3%
33	Peru	2	0.3%
34	Philippines	1	0.1%
35	Romania	1	0.1%
36	South Africa	1	0.1%
37	Saudi Arabia	1	0.1%
38	Nepal	1	0.1%
39	Austria	1	0.1%
40	Argentina	1	0.1%
41	Ireland	1	0.1%
42	Sri Lanka	1	0.1%
43	Taiwan	1	0.1%
44	United Arab Emirates	1	0.1%