Rank	Countries/Territories	Count	Percent
1	United States	504	39.1%
2	China	387	30%
3	Germany	95	7.4%
4	Netherlands	66	5.1%
5	United Kingdom	35	2.7%
6	Canada	23	1.8%
7	Iran, Islamic Republic of	22	1.7%
8	Norway	20	1.6%
9	Japan	19	1.5%
10	France	15	1.2%
11	Cyprus	11	0.9%
12	Singapore	11	0.9%
13	Spain	10	0.8%
14	Korea, Republic of	10	0.8%
15	Russia	9	0.7%
16	Taiwan	8	0.6%
17	Australia	6	0.5%
18	Brazil	6	0.5%
19	India	5	0.4%
20	Malaysia	4	0.3%
21	Italy	4	0.3%
22	Hong Kong	3	0.2%
23	Hungary	2	0.2%
24	Argentina	2	0.2%
25	Greece	2	0.2%
26	Poland	2	0.2%
27	Portugal	2	0.2%
28	Romania	2	0.2%
29	Nigeria	1	0.1%
30	Thailand	1	0.1%
31	Ukraine	1	0.1%
32	Mongolia	1	0.1%