Rank	Countries/Territories	Count	Percent
1	United States	502	35%
2	China	385	26.8%
3	Germany	133	9.3%
4	Japan	123	8.6%
5	Canada	104	7.2%
6	France	35	2.4%
7	Singapore	17	1.2%
8	Serbia	16	1.1%
9	Pakistan	12	0.8%
10	India	10	0.7%
11	United Kingdom	9	0.6%
12	Korea, Republic of	8	0.6%
13	Netherlands	7	0.5%
14	Argentina	7	0.5%
15	Australia	7	0.5%
16	Mexico	6	0.4%
17	Taiwan	5	0.3%
18	Russia	5	0.3%
19	Austria	5	0.3%
20	Cyprus	5	0.3%
21	Iran, Islamic Republic of	4	0.3%
22	Turkey	4	0.3%
23	Latvia	4	0.3%
24	Norway	3	0.2%
25	Portugal	3	0.2%
26	Ukraine	3	0.2%
27	Mongolia	2	0.1%
28	Ireland	2	0.1%
29	Bulgaria	2	0.1%
30	Chile	2	0.1%
31	Colombia	2	0.1%
32	Bangladesh	1	0.1%
33	Hong Kong	1	0.1%
34	Kazakhstan	1	0.1%
35	Spain	1	0.1%