Rank	Countries/Territories	Count	Percent
1	United States	554	51.2%
2	China	152	14%
3	Germany	121	11.2%
4	France	47	4.3%
5	Japan	26	2.4%
6	Canada	25	2.3%
7	Korea, Republic of	15	1.4%
8	India	15	1.4%
9	Cyprus	14	1.3%
10	Spain	12	1.1%
11	Netherlands	10	0.9%
12	Norway	9	0.8%
13	Hong Kong	9	0.8%
14	Australia	9	0.8%
15	Ireland	9	0.8%
16	Italy	7	0.6%
17	Mexico	7	0.6%
18	Singapore	7	0.6%
19	Russia	5	0.5%
20	United Kingdom	4	0.4%
21	Latvia	4	0.4%
22	Brazil	3	0.3%
23	Trinidad and Tobago	3	0.3%
24	Ukraine	2	0.2%
25	Sweden	2	0.2%
26	Switzerland	2	0.2%
27	Bulgaria	2	0.2%
28	Iran, Islamic Republic of	2	0.2%
29	Argentina	1	0.1%
30	South Africa	1	0.1%
31	Philippines	1	0.1%
32	Poland	1	0.1%
33	Portugal	1	0.1%