Rank	Countries/Territories	Count	Percent
1	United States	533	41.3%
2	China	459	35.6%
3	Germany	91	7.1%
4	Japan	34	2.6%
5	France	27	2.1%
6	Korea, Republic of	21	1.6%
7	Canada	15	1.2%
8	Taiwan	14	1.1%
9	Ukraine	12	0.9%
10	Hong Kong	11	0.9%
11	Norway	8	0.6%
12	Singapore	8	0.6%
13	Netherlands	6	0.5%
14	Morocco	5	0.4%
15	Cyprus	5	0.4%
16		4	0.3%
17	Argentina	4	0.3%
18	Australia	4	0.3%
19	India	4	0.3%
20	Ireland	4	0.3%
21	Mongolia	3	0.2%
22	Spain	2	0.2%
23	Pakistan	2	0.2%
24	Philippines	2	0.2%
25	United Kingdom	2	0.2%
26	Thailand	2	0.2%
27	Latvia	2	0.2%
28	Malaysia	2	0.2%
29	Brazil	2	0.2%
30	Bulgaria	1	0.1%
31	Bangladesh	1	0.1%