Rank	Countries/Territories	Count	Percent
1	United States	516	37.6%
2	China	315	22.9%
3	Germany	142	10.3%
4	Egypt	51	3.7%
5	United Kingdom	39	2.8%
6	Canada	35	2.5%
7	Netherlands	26	1.9%
8	Australia	22	1.6%
9	India	18	1.3%
10	Israel	18	1.3%
11	Ireland	17	1.2%
12	Japan	16	1.2%
13	Korea, Republic of	12	0.9%
14	Romania	12	0.9%
15	Singapore	11	0.8%
16	Italy	7	0.5%
17	Hong Kong	7	0.5%
18	Cyprus	7	0.5%
19	France	6	0.4%
20	Belgium	6	0.4%
21	Brazil	6	0.4%
22	Puerto Rico	6	0.4%
23	Spain	5	0.4%
24	Colombia	5	0.4%
25	Pakistan	5	0.4%
26	Indonesia	4	0.3%
27	Iran, Islamic Republic of	4	0.3%
28	Chile	4	0.3%
29	Argentina	4	0.3%
30	Finland	4	0.3%
31	Serbia	4	0.3%
32	Sweden	3	0.2%
33	Syrian Arab Republic	3	0.2%
34	Turkey	3	0.2%
35	South Africa	3	0.2%
36	Russia	3	0.2%
37	Sri Lanka	2	0.1%
38	Viet Nam	2	0.1%
39	Denmark	2	0.1%
40	Ecuador	2	0.1%
41	Poland	2	0.1%
42	Portugal	2	0.1%
43	Malaysia	2	0.1%
44	Mexico	2	0.1%
45	Mongolia	2	0.1%
46	Montenegro	2	0.1%
47	Norway	1	0.1%
48	Kuwait	1	0.1%
49	Czech Republic	1	0.1%
50	Croatia	1	0.1%
51	Bulgaria	1	0.1%