Rank	Countries/Territories	Count	Percent
1	United States	245	41.2%
2	China	156	26.3%
3	Germany	50	8.4%
4		27	4.5%
5	Japan	19	3.2%
6	Norway	12	2%
7	Slovenia	12	2%
8	Netherlands	7	1.2%
9	United Kingdom	7	1.2%
10	Saudi Arabia	6	1%
11	Brazil	5	0.8%
12	Canada	5	0.8%
13	Spain	4	0.7%
14	Australia	4	0.7%
15	Singapore	4	0.7%
16	Jordan	3	0.5%
17	Iran, Islamic Republic of	2	0.3%
18	Ireland	2	0.3%
19	Hong Kong	2	0.3%
20	Iceland	2	0.3%
21	Argentina	2	0.3%
22	Denmark	2	0.3%
23	Egypt	2	0.3%
24	France	2	0.3%
25	Taiwan	2	0.3%
26	Ukraine	2	0.3%
27	Russia	2	0.3%
28	Switzerland	1	0.2%
29	Serbia	1	0.2%
30	Cyprus	1	0.2%
31	India	1	0.2%
32	Greece	1	0.2%
33	Malaysia	1	0.2%