Rank	Countries/Territories	Count	Percent
1	United States	344	37.8%
2	China	304	33.4%
3	Germany	73	8%
4	United Kingdom	67	7.4%
5	Sweden	16	1.8%
6	Netherlands	16	1.8%
7	Japan	11	1.2%
8	Hong Kong	10	1.1%
9	Czech Republic	10	1.1%
10	France	8	0.9%
11	Singapore	8	0.9%
12	Cyprus	4	0.4%
13	Australia	4	0.4%
14	India	4	0.4%
15	Iran, Islamic Republic of	3	0.3%
16	Ireland	3	0.3%
17	Argentina	3	0.3%
18	Philippines	3	0.3%
19	Poland	2	0.2%
20	Russia	2	0.2%
21	Thailand	2	0.2%
22		2	0.2%
23	Bulgaria	2	0.2%
24	Lithuania	2	0.2%
25	Mauritius	2	0.2%
26	Mongolia	2	0.2%
27	Korea, Republic of	1	0.1%
28	Latvia	1	0.1%
29	Norway	1	0.1%