Rank	Countries/Territories	Count	Percent
1	United States	538	42.8%
2	China	289	23%
3	Germany	140	11.1%
4	Singapore	40	3.2%
5	France	39	3.1%
6	Netherlands	30	2.4%
7	Canada	29	2.3%
8	India	15	1.2%
9	Japan	14	1.1%
10	Switzerland	13	1%
11	Australia	11	0.9%
12	Cyprus	10	0.8%
13	United Kingdom	10	0.8%
14	Korea, Republic of	9	0.7%
15	Nigeria	8	0.6%
16	Ireland	7	0.6%
17	Italy	5	0.4%
18	Ethiopia	5	0.4%
19	Ukraine	5	0.4%
20	Sweden	4	0.3%
21	Poland	4	0.3%
22	Iran, Islamic Republic of	4	0.3%
23	Bulgaria	4	0.3%
24		3	0.2%
25	Philippines	3	0.2%
26	Russia	2	0.2%
27	Mauritius	2	0.2%
28	Mongolia	2	0.2%
29	Argentina	2	0.2%
30	Egypt	2	0.2%
31	Jordan	2	0.2%
32	Kenya	1	0.1%
33	Bangladesh	1	0.1%
34	Brazil	1	0.1%
35	Malaysia	1	0.1%
36	Pakistan	1	0.1%
37	South Africa	1	0.1%