Rank	Countries/Territories	Count	Percent
1	United States	517	37.9%
2	China	432	31.7%
3	Germany	117	8.6%
4	Singapore	47	3.4%
5		28	2.1%
6	Iran, Islamic Republic of	28	2.1%
7	Japan	24	1.8%
8	India	17	1.2%
9	France	14	1%
10	Australia	13	1%
11	Russia	13	1%
12	Canada	12	0.9%
13	Belgium	7	0.5%
14	Netherlands	7	0.5%
15	Spain	7	0.5%
16	Ireland	6	0.4%
17	Bangladesh	6	0.4%
18	Taiwan	5	0.4%
19	United Kingdom	5	0.4%
20	Uzbekistan	5	0.4%
21	Turkey	4	0.3%
22	Slovenia	4	0.3%
23	Cyprus	4	0.3%
24	Brazil	3	0.2%
25	Israel	3	0.2%
26	New Zealand	3	0.2%
27	Portugal	3	0.2%
28	Saudi Arabia	2	0.1%
29	Palestine, State of	2	0.1%
30	Italy	2	0.1%
31	Malaysia	2	0.1%
32	Argentina	2	0.1%
33	Denmark	2	0.1%
34	Egypt	2	0.1%
35	Finland	2	0.1%
36	Thailand	2	0.1%
37	Viet Nam	2	0.1%
38	Switzerland	1	0.1%
39	Ecuador	1	0.1%
40	Hong Kong	1	0.1%
41	Belarus	1	0.1%
42	Bulgaria	1	0.1%
43	Colombia	1	0.1%
44	Indonesia	1	0.1%
45	Philippines	1	0.1%
46	Senegal	1	0.1%
47	Romania	1	0.1%