Rank	Countries/Territories	Count	Percent
1	United States	502	37.3%
2	China	408	30.3%
3	Germany	88	6.5%
4	Japan	80	5.9%
5	Korea, Republic of	55	4.1%
6	France	24	1.8%
7	Canada	23	1.7%
8	Singapore	20	1.5%
9	Spain	18	1.3%
10	Norway	17	1.3%
11	Netherlands	16	1.2%
12	Hong Kong	12	0.9%
13	Russia	9	0.7%
14	Saudi Arabia	8	0.6%
15	Turkey	8	0.6%
16	Cyprus	8	0.6%
17	Iran, Islamic Republic of	8	0.6%
18	India	7	0.5%
19	Australia	6	0.4%
20	Latvia	4	0.3%
21	United Kingdom	4	0.3%
22	Taiwan	3	0.2%
23	Bangladesh	3	0.2%
24	Indonesia	3	0.2%
25	Belgium	2	0.1%
26	Malaysia	2	0.1%
27	Ireland	2	0.1%
28	Pakistan	2	0.1%
29	Poland	1	0.1%
30	Georgia	1	0.1%
31	Denmark	1	0.1%