Rank	Countries/Territories	Count	Percent
1	United States	507	39.4%
2	China	375	29.1%
3	Germany	126	9.8%
4	Pakistan	47	3.7%
5	France	34	2.6%
6	Italy	17	1.3%
7	Netherlands	16	1.2%
8	United Kingdom	15	1.2%
9	Japan	13	1%
10	Australia	11	0.9%
11	Brazil	10	0.8%
12	Spain	8	0.6%
13	Romania	7	0.5%
14	Russia	7	0.5%
15	Ireland	7	0.5%
16	Canada	6	0.5%
17	Bangladesh	6	0.5%
18	Turkey	6	0.5%
19	Indonesia	5	0.4%
20	Korea, Republic of	4	0.3%
21	Cyprus	4	0.3%
22	Singapore	4	0.3%
23	United Arab Emirates	3	0.2%
24	Egypt	3	0.2%
25	Greece	3	0.2%
26	Chile	3	0.2%
27	Iran, Islamic Republic of	3	0.2%
28	Portugal	3	0.2%
29	Nigeria	2	0.2%
30	Malaysia	2	0.2%
31	Bulgaria	2	0.2%
32	Austria	2	0.2%
33	Hong Kong	2	0.2%
34	India	2	0.2%
35	Viet Nam	2	0.2%
36	Poland	2	0.2%
37	Switzerland	2	0.2%
38	Slovakia	2	0.2%
39	South Africa	2	0.2%
40	Saudi Arabia	2	0.2%
41	Serbia	1	0.1%
42	Sweden	1	0.1%
43	Ukraine	1	0.1%
44	Colombia	1	0.1%
45	Argentina	1	0.1%
46	Mauritius	1	0.1%
47	Qatar	1	0.1%
48	Philippines	1	0.1%
49	Latvia	1	0.1%
50	Lithuania	1	0.1%