Rank	Countries/Territories	Count	Percent
1	United States	453	43.3%
2	China	273	26.1%
3	Germany	80	7.7%
4	Japan	31	3%
5	Canada	30	2.9%
6	Netherlands	22	2.1%
7	Taiwan	21	2%
8		21	2%
9	United Kingdom	15	1.4%
10	Norway	11	1.1%
11	Spain	11	1.1%
12	India	11	1.1%
13	Australia	8	0.8%
14	France	8	0.8%
15	Ireland	6	0.6%
16	Pakistan	5	0.5%
17	Italy	4	0.4%
18	Korea, Republic of	4	0.4%
19	Cyprus	3	0.3%
20	Saudi Arabia	3	0.3%
21	Singapore	3	0.3%
22	Switzerland	3	0.3%
23	South Africa	2	0.2%
24	Portugal	2	0.2%
25	Brazil	2	0.2%
26	Indonesia	2	0.2%
27	Iran, Islamic Republic of	2	0.2%
28	Hong Kong	2	0.2%
29	Malaysia	1	0.1%
30	Czech Republic	1	0.1%
31	Belgium	1	0.1%
32	Argentina	1	0.1%
33	Sri Lanka	1	0.1%
34	Syrian Arab Republic	1	0.1%
35	Thailand	1	0.1%