Rank	Countries/Territories	Count	Percent
1	United States	471	53%
2	China	136	15.3%
3	Germany	104	11.7%
4	Japan	21	2.4%
5	France	17	1.9%
6	Singapore	14	1.6%
7	Canada	13	1.5%
8	United Kingdom	12	1.4%
9	Bulgaria	10	1.1%
10	India	9	1%
11	Netherlands	9	1%
12	Indonesia	7	0.8%
13	Ireland	6	0.7%
14	Cyprus	5	0.6%
15	Australia	5	0.6%
16	Korea, Republic of	5	0.6%
17	Saudi Arabia	5	0.6%
18	Turkey	5	0.6%
19	Thailand	4	0.5%
20	Egypt	4	0.5%
21	Bangladesh	3	0.3%
22	Argentina	3	0.3%
23	Armenia	2	0.2%
24	Romania	2	0.2%
25	Russia	2	0.2%
26	Nigeria	2	0.2%
27	Peru	2	0.2%
28	Philippines	1	0.1%
29	Poland	1	0.1%
30	Libya	1	0.1%
31	Mongolia	1	0.1%
32	Nepal	1	0.1%
33	Switzerland	1	0.1%
34	Ukraine	1	0.1%
35	United Arab Emirates	1	0.1%
36	Colombia	1	0.1%
37	Denmark	1	0.1%