Rank	Countries/Territories	Count	Percent
1	United States	492	44.6%
2	China	254	23%
3	Korea, Republic of	142	12.9%
4	Germany	61	5.5%
5	Japan	24	2.2%
6	Netherlands	17	1.5%
7	France	17	1.5%
8	Canada	10	0.9%
9	India	10	0.9%
10	Ireland	10	0.9%
11	Singapore	9	0.8%
12	United Kingdom	6	0.5%
13	Iran, Islamic Republic of	6	0.5%
14	Australia	6	0.5%
15	Cyprus	5	0.5%
16	Tunisia	4	0.4%
17	Russia	3	0.3%
18	Slovakia	3	0.3%
19	Puerto Rico	3	0.3%
20	Malaysia	3	0.3%
21	Romania	2	0.2%
22	Poland	2	0.2%
23	South Africa	2	0.2%
24	Sweden	2	0.2%
25	Switzerland	2	0.2%
26	Ukraine	1	0.1%
27	Viet Nam	1	0.1%
28	Mongolia	1	0.1%
29	Indonesia	1	0.1%
30	Hungary	1	0.1%
31	Colombia	1	0.1%
32	Belgium	1	0.1%
33	Argentina	1	0.1%