Rank	Countries/Territories	Count	Percent
1	United States	329	34.7%
2	China	282	29.8%
3	Germany	79	8.3%
4	Japan	67	7.1%
5	Canada	31	3.3%
6	France	22	2.3%
7	Singapore	19	2%
8	Korea, Republic of	15	1.6%
9	India	15	1.6%
10	Netherlands	10	1.1%
11	United Kingdom	10	1.1%
12	Taiwan	9	1%
13	Hong Kong	9	1%
14	Finland	7	0.7%
15	Switzerland	7	0.7%
16	Russia	5	0.5%
17	Thailand	4	0.4%
18	Cyprus	3	0.3%
19	Belgium	3	0.3%
20	Iran, Islamic Republic of	3	0.3%
21	Italy	2	0.2%
22	Poland	2	0.2%
23	Australia	2	0.2%
24	Denmark	2	0.2%
25	Ukraine	2	0.2%
26	Mongolia	2	0.2%
27	South Africa	2	0.2%
28	Spain	1	0.1%
29	Argentina	1	0.1%
30	Romania	1	0.1%
31	Malaysia	1	0.1%