Rank	Countries/Territories	Count	Percent
1	United States	538	42.4%
2	China	430	33.9%
3	Germany	102	8%
4	France	37	2.9%
5	Netherlands	20	1.6%
6	Japan	17	1.3%
7	Singapore	17	1.3%
8	United Kingdom	16	1.3%
9	Switzerland	10	0.8%
10	Cyprus	9	0.7%
11	Ukraine	8	0.6%
12	Australia	6	0.5%
13	Korea, Republic of	6	0.5%
14	India	5	0.4%
15	Bulgaria	5	0.4%
16	Thailand	5	0.4%
17	Sweden	4	0.3%
18	Greece	4	0.3%
19	Hong Kong	4	0.3%
20	Iran, Islamic Republic of	4	0.3%
21	Ireland	3	0.2%
22	Argentina	3	0.2%
23	Canada	3	0.2%
24	Denmark	2	0.2%
25	Lithuania	2	0.2%
26	Russia	2	0.2%
27	South Africa	2	0.2%
28	Taiwan	1	0.1%
29	Norway	1	0.1%
30	Philippines	1	0.1%
31	Romania	1	0.1%