Rank	Countries/Territories	Count	Percent
1	United States	577	43%
2	China	280	20.9%
3	Germany	130	9.7%
4	Canada	73	5.4%
5	United Kingdom	47	3.5%
6	France	30	2.2%
7	Korea, Republic of	23	1.7%
8		20	1.5%
9	Singapore	16	1.2%
10	Netherlands	14	1%
11	India	13	1%
12	Japan	10	0.7%
13	Portugal	10	0.7%
14	Poland	8	0.6%
15	Spain	8	0.6%
16	Uganda	7	0.5%
17	South Africa	7	0.5%
18	Australia	7	0.5%
19	Cyprus	7	0.5%
20	Egypt	6	0.4%
21	Hong Kong	5	0.4%
22	Taiwan	5	0.4%
23	Iran, Islamic Republic of	4	0.3%
24	Pakistan	4	0.3%
25	Russia	3	0.2%
26	Malaysia	3	0.2%
27	Iraq	3	0.2%
28	Ireland	3	0.2%
29	Brazil	3	0.2%
30	Bangladesh	2	0.1%
31	Nigeria	2	0.1%
32	Norway	2	0.1%
33	Macao	2	0.1%
34	Saudi Arabia	2	0.1%
35	Romania	1	0.1%
36	Mongolia	1	0.1%
37	Belgium	1	0.1%
38	Argentina	1	0.1%
39	Finland	1	0.1%
40	Ukraine	1	0.1%