Rank	Countries/Territories	Count	Percent
1	United States	271	35.6%
2	China	246	32.3%
3	Germany	61	8%
4	France	25	3.3%
5		24	3.1%
6	Japan	23	3%
7	Italy	13	1.7%
8	India	10	1.3%
9	Netherlands	10	1.3%
10	Australia	9	1.2%
11	Norway	8	1%
12	Cyprus	7	0.9%
13	Iran, Islamic Republic of	6	0.8%
14	Czech Republic	5	0.7%
15	Canada	5	0.7%
16	Singapore	5	0.7%
17	Turkey	4	0.5%
18	Spain	3	0.4%
19	United Kingdom	3	0.4%
20	Romania	3	0.4%
21	South Africa	2	0.3%
22	Malaysia	2	0.3%
23	Taiwan	2	0.3%
24	Thailand	2	0.3%
25	Brazil	2	0.3%
26	Indonesia	2	0.3%
27	Ireland	2	0.3%
28	Finland	1	0.1%
29	Bulgaria	1	0.1%
30	Chile	1	0.1%
31	Costa Rica	1	0.1%
32	Ukraine	1	0.1%
33	United Arab Emirates	1	0.1%
34	Russia	1	0.1%