Rank	Countries/Territories	Count	Percent
1	United States	510	41.8%
2	China	171	14%
3	Germany	140	11.5%
4	India	132	10.8%
5	Singapore	52	4.3%
6	Canada	36	3%
7	Japan	23	1.9%
8	Ireland	20	1.6%
9	Netherlands	13	1.1%
10	Korea, Republic of	11	0.9%
11	United Kingdom	11	0.9%
12	Iran, Islamic Republic of	10	0.8%
13	Cyprus	8	0.7%
14	France	7	0.6%
15	Russia	6	0.5%
16	Argentina	5	0.4%
17	Austria	5	0.4%
18	Sweden	5	0.4%
19	Australia	4	0.3%
20	Italy	4	0.3%
21	Indonesia	3	0.2%
22	Belgium	3	0.2%
23	Ethiopia	3	0.2%
24	Finland	3	0.2%
25	Egypt	2	0.2%
26	Gabon	2	0.2%
27	Greece	2	0.2%
28	Brazil	2	0.2%
29	Croatia	2	0.2%
30	Libya	2	0.2%
31	Malaysia	2	0.2%
32	Mexico	2	0.2%
33	Saudi Arabia	2	0.2%
34	Switzerland	2	0.2%
35	Viet Nam	2	0.2%
36	Tanzania, United Republic of	2	0.2%
37	Ukraine	1	0.1%
38	Taiwan	1	0.1%
39	Spain	1	0.1%
40	Norway	1	0.1%
41	Philippines	1	0.1%
42	Poland	1	0.1%
43	Portugal	1	0.1%
44	Romania	1	0.1%
45	Mongolia	1	0.1%
46	Israel	1	0.1%
47	Denmark	1	0.1%