Rank	Countries/Territories	Count	Percent
1	United States	434	36.4%
2	China	259	21.7%
3	Germany	77	6.5%
4	Japan	72	6%
5	India	44	3.7%
6	Canada	31	2.6%
7		30	2.5%
8	France	27	2.3%
9	Italy	17	1.4%
10	Australia	16	1.3%
11	Russia	16	1.3%
12	Netherlands	15	1.3%
13	Iran, Islamic Republic of	10	0.8%
14	Korea, Republic of	9	0.8%
15	Hong Kong	9	0.8%
16	Romania	9	0.8%
17	United Kingdom	9	0.8%
18	Thailand	8	0.7%
19	Singapore	8	0.7%
20	Spain	6	0.5%
21	Ireland	6	0.5%
22	Egypt	5	0.4%
23	Colombia	5	0.4%
24	Sweden	5	0.4%
25	Turkey	5	0.4%
26	Viet Nam	4	0.3%
27	Costa Rica	4	0.3%
28	Cyprus	4	0.3%
29	Mongolia	4	0.3%
30	Israel	3	0.3%
31	Austria	3	0.3%
32	Belgium	3	0.3%
33	Brazil	3	0.3%
34	Slovakia	3	0.3%
35	Saudi Arabia	3	0.3%
36	Mexico	2	0.2%
37	Syrian Arab Republic	2	0.2%
38	Burkina Faso	2	0.2%
39	Argentina	2	0.2%
40	Portugal	2	0.2%
41	Qatar	2	0.2%
42	Myanmar	1	0.1%
43	New Zealand	1	0.1%
44	Norway	1	0.1%
45	Pakistan	1	0.1%
46	Poland	1	0.1%
47	Malaysia	1	0.1%
48	Bangladesh	1	0.1%
49	Bulgaria	1	0.1%
50	Estonia	1	0.1%
51	Taiwan	1	0.1%
52	Yemen	1	0.1%
53	Slovenia	1	0.1%
54	Switzerland	1	0.1%