Rank	Countries/Territories	Count	Percent
1	United States	284	36%
2	China	221	28%
3	Germany	84	10.6%
4	France	28	3.5%
5	Japan	27	3.4%
6		20	2.5%
7	United Kingdom	14	1.8%
8	Switzerland	13	1.6%
9	Korea, Republic of	10	1.3%
10	Iran, Islamic Republic of	7	0.9%
11	Canada	7	0.9%
12	Colombia	7	0.9%
13	Netherlands	7	0.9%
14	Singapore	6	0.8%
15	Taiwan	6	0.8%
16	India	5	0.6%
17	Indonesia	5	0.6%
18	Malaysia	4	0.5%
19	Cyprus	4	0.5%
20	Guatemala	4	0.5%
21	Bulgaria	4	0.5%
22	Russia	4	0.5%
23	Mongolia	3	0.4%
24	Australia	3	0.4%
25	Philippines	2	0.3%
26	Turkey	2	0.3%
27	Ukraine	1	0.1%
28	Saudi Arabia	1	0.1%
29	Norway	1	0.1%
30	Bangladesh	1	0.1%
31	Mauritius	1	0.1%
32	Latvia	1	0.1%
33	Israel	1	0.1%
34	Italy	1	0.1%