Rank	Countries/Territories	Count	Percent
1	United States	521	51.6%
2	China	201	19.9%
3	Germany	117	11.6%
4	India	14	1.4%
5	Switzerland	14	1.4%
6	Slovakia	14	1.4%
7	Greece	13	1.3%
8	Japan	13	1.3%
9	Netherlands	11	1.1%
10	France	10	1%
11	Spain	8	0.8%
12	Australia	7	0.7%
13	Korea, Republic of	7	0.7%
14	Hong Kong	6	0.6%
15	Argentina	5	0.5%
16	Belgium	4	0.4%
17	Cyprus	4	0.4%
18	Russia	4	0.4%
19	Poland	4	0.4%
20	Turkey	4	0.4%
21	Italy	4	0.4%
22	Portugal	3	0.3%
23	Romania	3	0.3%
24	New Zealand	2	0.2%
25	Singapore	2	0.2%
26	Sweden	2	0.2%
27	Ukraine	2	0.2%
28	Canada	2	0.2%
29	Hungary	2	0.2%
30	Malaysia	2	0.2%
31	Mongolia	1	0.1%
32	Israel	1	0.1%
33	Ghana	1	0.1%
34	Taiwan	1	0.1%
35	Tonga	1	0.1%