Rank	Countries/Territories	Count	Percent
1	United States	521	42.4%
2	China	359	29.2%
3	Germany	124	10.1%
4	Portugal	24	2%
5	Netherlands	22	1.8%
6	France	18	1.5%
7	Poland	18	1.5%
8	Canada	18	1.5%
9	Japan	15	1.2%
10	Korea, Republic of	13	1.1%
11	Malaysia	10	0.8%
12	India	10	0.8%
13	Australia	10	0.8%
14	Belgium	7	0.6%
15	Cyprus	7	0.6%
16	Hong Kong	6	0.5%
17	Ireland	6	0.5%
18	Denmark	4	0.3%
19	Argentina	4	0.3%
20	Turkey	4	0.3%
21	Ukraine	3	0.2%
22	United Kingdom	3	0.2%
23	Norway	3	0.2%
24	Italy	3	0.2%
25	Iran, Islamic Republic of	3	0.2%
26	Finland	2	0.2%
27	Czech Republic	2	0.2%
28	Mongolia	2	0.2%
29	Singapore	2	0.2%
30	Spain	2	0.2%
31	Switzerland	1	0.1%
32	Russia	1	0.1%
33	Lithuania	1	0.1%
34	Kiribati	1	0.1%