Rank	Countries/Territories	Count	Percent
1	United States	532	33.3%
2	China	514	32.2%
3	Germany	216	13.5%
4	Japan	92	5.8%
5	Canada	45	2.8%
6	Latvia	30	1.9%
7	Russia	26	1.6%
8	Singapore	20	1.3%
9	Norway	15	0.9%
10	France	14	0.9%
11	Netherlands	13	0.8%
12	Hong Kong	12	0.8%
13	Australia	11	0.7%
14	United Kingdom	10	0.6%
15	Pakistan	8	0.5%
16	India	6	0.4%
17	Iran, Islamic Republic of	4	0.3%
18	Bangladesh	3	0.2%
19	Argentina	3	0.2%
20	Cyprus	3	0.2%
21	Ukraine	3	0.2%
22	New Zealand	2	0.1%
23	Spain	2	0.1%
24	Taiwan	2	0.1%
25	Mexico	2	0.1%
26	Ireland	2	0.1%
27	Italy	2	0.1%
28	Lebanon	1	0.1%
29	Malaysia	1	0.1%
30	Czech Republic	1	0.1%
31	Korea, Republic of	1	0.1%
32	Poland	1	0.1%
33	Romania	1	0.1%