Rank	Countries/Territories	Count	Percent
1	United States	203	33.4%
2	China	184	30.3%
3	Germany	45	7.4%
4	Japan	31	5.1%
5	France	25	4.1%
6	Korea, Republic of	17	2.8%
7	India	17	2.8%
8	Canada	12	2%
9	United Kingdom	12	2%
10	Iran, Islamic Republic of	8	1.3%
11	Netherlands	8	1.3%
12	Thailand	7	1.2%
13	Russia	6	1%
14	Spain	4	0.7%
15	Taiwan	3	0.5%
16	Mexico	3	0.5%
17	Chile	3	0.5%
18	Guinea	3	0.5%
19	Cyprus	3	0.5%
20	Brazil	2	0.3%
21	Romania	2	0.3%
22	Singapore	2	0.3%
23	Turkey	2	0.3%
24	Switzerland	1	0.2%
25	Saudi Arabia	1	0.2%
26	Ireland	1	0.2%
27	Luxembourg	1	0.2%
28	Colombia	1	0.2%