Rank	Countries/Territories	Count	Percent
1	United States	431	46.1%
2	China	194	20.7%
3	Germany	172	18.4%
4	France	16	1.7%
5	Canada	15	1.6%
6	Russia	12	1.3%
7	Singapore	12	1.3%
8	United Kingdom	9	1%
9	Netherlands	9	1%
10	Japan	8	0.9%
11	Italy	6	0.6%
12	India	5	0.5%
13	Norway	5	0.5%
14	Turkey	5	0.5%
15	Ukraine	5	0.5%
16	Spain	4	0.4%
17	Korea, Republic of	3	0.3%
18	Ireland	3	0.3%
19	Cyprus	3	0.3%
20	Egypt	3	0.3%
21	Colombia	2	0.2%
22	Brazil	2	0.2%
23	Iran, Islamic Republic of	2	0.2%
24	South Africa	2	0.2%
25	Mongolia	2	0.2%
26	Taiwan	1	0.1%
27	Viet Nam	1	0.1%
28	Malta	1	0.1%
29	Poland	1	0.1%
30	Argentina	1	0.1%