Rank	Countries/Territories	Count	Percent
1	United States	307	43.2%
2	China	150	21.1%
3	Germany	54	7.6%
4	Japan	21	3%
5	Taiwan	20	2.8%
6	Korea, Republic of	18	2.5%
7	Greece	14	2%
8	France	13	1.8%
9	Netherlands	13	1.8%
10	Australia	11	1.5%
11		10	1.4%
12	Norway	10	1.4%
13	Hong Kong	8	1.1%
14	Malaysia	7	1%
15	Poland	7	1%
16	Singapore	7	1%
17	Iran, Islamic Republic of	6	0.8%
18	Italy	5	0.7%
19	Switzerland	5	0.7%
20	Russia	3	0.4%
21	India	3	0.4%
22	Cyprus	3	0.4%
23	Chile	2	0.3%
24	Brazil	2	0.3%
25	Mexico	2	0.3%
26	Spain	2	0.3%
27	Sri Lanka	2	0.3%
28	Sweden	2	0.3%
29	Viet Nam	1	0.1%
30	Canada	1	0.1%
31	Argentina	1	0.1%
32	Egypt	1	0.1%