Rank	Countries/Territories	Count	Percent
1	United States	263	35.5%
2	China	206	27.8%
3	Germany	93	12.6%
4	Spain	20	2.7%
5	India	17	2.3%
6	Japan	14	1.9%
7	Netherlands	14	1.9%
8	Israel	10	1.4%
9	France	9	1.2%
10	Ireland	9	1.2%
11	United Kingdom	7	0.9%
12	Singapore	6	0.8%
13	Korea, Republic of	6	0.8%
14	Australia	6	0.8%
15	Iran, Islamic Republic of	5	0.7%
16	Egypt	5	0.7%
17	Russia	5	0.7%
18	Taiwan	4	0.5%
19	Canada	4	0.5%
20	Hong Kong	4	0.5%
21	Indonesia	3	0.4%
22	Austria	3	0.4%
23	Afghanistan	3	0.4%
24	Slovakia	3	0.4%
25	Mexico	3	0.4%
26	Kazakhstan	2	0.3%
27	Argentina	2	0.3%
28	Iraq	2	0.3%
29	Viet Nam	2	0.3%
30	Uzbekistan	1	0.1%
31	Colombia	1	0.1%
32	Cyprus	1	0.1%
33	Bangladesh	1	0.1%
34	Brazil	1	0.1%
35	Pakistan	1	0.1%
36	Philippines	1	0.1%
37	Romania	1	0.1%
38	Saudi Arabia	1	0.1%
39	Uganda	1	0.1%