Rank	Countries/Territories	Count	Percent
1	United States	285	34.4%
2	China	281	33.9%
3	Germany	60	7.2%
4	France	27	3.3%
5	Japan	19	2.3%
6	Canada	19	2.3%
7	Sweden	15	1.8%
8	Netherlands	14	1.7%
9	Denmark	14	1.7%
10	Switzerland	12	1.4%
11	Jordan	8	1%
12	India	8	1%
13	Saudi Arabia	7	0.8%
14	Singapore	7	0.8%
15	Cyprus	5	0.6%
16	Australia	4	0.5%
17	Iraq	4	0.5%
18	Ireland	4	0.5%
19	Thailand	4	0.5%
20	United Kingdom	4	0.5%
21	Korea, Republic of	3	0.4%
22	Iran, Islamic Republic of	2	0.2%
23	Chile	2	0.2%
24	Russia	2	0.2%
25	Mongolia	2	0.2%
26	South Africa	2	0.2%
27	Oman	2	0.2%
28	Pakistan	2	0.2%
29	Portugal	1	0.1%
30	Romania	1	0.1%
31	Spain	1	0.1%
32	Taiwan	1	0.1%
33	Ukraine	1	0.1%
34	Bangladesh	1	0.1%
35	Belgium	1	0.1%
36	Argentina	1	0.1%
37	Latvia	1	0.1%
38	Mexico	1	0.1%