Rank	Countries/Territories	Count	Percent
1	United States	491	38.8%
2	China	299	23.7%
3	Netherlands	195	15.4%
4	Germany	88	7%
5	Japan	73	5.8%
6	Canada	23	1.8%
7	Bulgaria	19	1.5%
8	Singapore	8	0.6%
9	France	7	0.6%
10	Korea, Republic of	7	0.6%
11	Cyprus	6	0.5%
12	Iran, Islamic Republic of	5	0.4%
13	Australia	4	0.3%
14	Brazil	4	0.3%
15	Romania	4	0.3%
16	Norway	3	0.2%
17	Turkey	3	0.2%
18	Argentina	3	0.2%
19	Egypt	2	0.2%
20	Ireland	2	0.2%
21	Hong Kong	2	0.2%
22	Lithuania	2	0.2%
23	Malaysia	2	0.2%
24	South Africa	2	0.2%
25	Philippines	2	0.2%
26	Russia	1	0.1%
27	Switzerland	1	0.1%
28	Ukraine	1	0.1%
29	United Kingdom	1	0.1%
30	Viet Nam	1	0.1%
31	Mongolia	1	0.1%
32	India	1	0.1%
33	Italy	1	0.1%