Rank	Countries/Territories	Count	Percent
1	United States	498	38.2%
2	China	356	27.3%
3	Germany	106	8.1%
4	France	38	2.9%
5	Egypt	37	2.8%
6	Canada	30	2.3%
7	Ethiopia	27	2.1%
8	Norway	25	1.9%
9	India	21	1.6%
10	Russia	15	1.1%
11	Japan	14	1.1%
12	Switzerland	13	1%
13	United Kingdom	12	0.9%
14	Ireland	12	0.9%
15	Singapore	9	0.7%
16	Netherlands	9	0.7%
17	Philippines	7	0.5%
18	Australia	6	0.5%
19	Cyprus	5	0.4%
20	Malaysia	5	0.4%
21	Mexico	4	0.3%
22	Iran, Islamic Republic of	4	0.3%
23	Hong Kong	4	0.3%
24	Taiwan	4	0.3%
25	Pakistan	4	0.3%
26	Hungary	3	0.2%
27	Indonesia	3	0.2%
28	Korea, Republic of	3	0.2%
29	Libya	2	0.2%
30	Israel	2	0.2%
31	Oman	2	0.2%
32	South Africa	2	0.2%
33	Sri Lanka	2	0.2%
34	Guam	2	0.2%
35	Ecuador	2	0.2%
36	Viet Nam	2	0.2%
37	Zimbabwe	2	0.2%
38	Turkey	2	0.2%
39	Portugal	2	0.2%
40	Syrian Arab Republic	2	0.2%
41	Ukraine	1	0.1%
42	United Arab Emirates	1	0.1%
43	Costa Rica	1	0.1%
44	Bangladesh	1	0.1%
45	Argentina	1	0.1%
46	Iraq	1	0.1%
47	Mongolia	1	0.1%