Rank	Countries/Territories	Count	Percent
1	United States	331	37.5%
2	China	278	31.5%
3	Germany	122	13.8%
4	Japan	25	2.8%
5	Russia	18	2%
6	United Kingdom	18	2%
7	Australia	15	1.7%
8	Netherlands	12	1.4%
9	Korea, Republic of	8	0.9%
10	Canada	8	0.9%
11	France	7	0.8%
12	Singapore	5	0.6%
13	Cyprus	4	0.5%
14	India	3	0.3%
15	Nigeria	3	0.3%
16	Norway	2	0.2%
17	Philippines	2	0.2%
18	Iran, Islamic Republic of	2	0.2%
19	Denmark	2	0.2%
20	Argentina	2	0.2%
21	Belgium	2	0.2%
22	Turkey	2	0.2%
23	Uganda	2	0.2%
24	Ukraine	1	0.1%
25	South Africa	1	0.1%
26	Sweden	1	0.1%
27	Switzerland	1	0.1%
28	Viet Nam	1	0.1%
29	Bulgaria	1	0.1%
30	Romania	1	0.1%
31	Morocco	1	0.1%
32	Saudi Arabia	1	0.1%
33	Serbia	1	0.1%