Rank	Countries/Territories	Count	Percent
1	United States	239	31.9%
2	China	228	30.4%
3	Germany	45	6%
4		36	4.8%
5	Netherlands	22	2.9%
6	United Kingdom	17	2.3%
7	Japan	16	2.1%
8	Australia	15	2%
9	Singapore	13	1.7%
10	Turkey	11	1.5%
11	Israel	11	1.5%
12	France	10	1.3%
13	Ireland	9	1.2%
14	Iran, Islamic Republic of	8	1.1%
15	India	6	0.8%
16	Canada	6	0.8%
17	Taiwan	5	0.7%
18	Thailand	5	0.7%
19	Norway	4	0.5%
20	Bulgaria	4	0.5%
21	Italy	4	0.5%
22	Cyprus	3	0.4%
23	Korea, Republic of	3	0.4%
24	Ukraine	3	0.4%
25	Poland	3	0.4%
26	Romania	3	0.4%
27	Russia	3	0.4%
28	Kuwait	2	0.3%
29	Austria	2	0.3%
30	Hong Kong	2	0.3%
31	Switzerland	2	0.3%
32	Viet Nam	2	0.3%
33	Botswana	1	0.1%
34	Brazil	1	0.1%
35	Lithuania	1	0.1%
36	Mongolia	1	0.1%
37	Philippines	1	0.1%
38	Nigeria	1	0.1%
39	Spain	1	0.1%