Rank	Countries/Territories	Count	Percent
1	United States	668	39.1%
2	China	651	38.1%
3	Germany	168	9.8%
4	Canada	62	3.6%
5	Japan	29	1.7%
6	United Kingdom	21	1.2%
7	Sweden	16	0.9%
8	Singapore	14	0.8%
9	Netherlands	10	0.6%
10	France	8	0.5%
11	Ukraine	8	0.5%
12	Korea, Republic of	6	0.4%
13	Australia	5	0.3%
14	India	4	0.2%
15	Cyprus	3	0.2%
16	Turkey	3	0.2%
17	South Africa	3	0.2%
18	Russia	3	0.2%
19	Saudi Arabia	3	0.2%
20	Spain	2	0.1%
21	Romania	2	0.1%
22	New Zealand	2	0.1%
23	Viet Nam	2	0.1%
24	Hong Kong	2	0.1%
25	Belgium	2	0.1%
26	Indonesia	2	0.1%
27	Iran, Islamic Republic of	2	0.1%
28	Malaysia	2	0.1%
29	Moldova, Republic of	1	0.1%
30	Ireland	1	0.1%
31	Italy	1	0.1%
32	Argentina	1	0.1%
33	Norway	1	0.1%