Rank	Countries/Territories	Count	Percent
1	United States	681	49.6%
2	China	276	20.1%
3	Germany	168	12.2%
4	India	33	2.4%
5	France	29	2.1%
6	Canada	25	1.8%
7	Australia	22	1.6%
8	Brazil	19	1.4%
9	Norway	16	1.2%
10	Netherlands	15	1.1%
11	Korea, Republic of	14	1%
12	Cyprus	13	0.9%
13	Japan	12	0.9%
14	Russia	7	0.5%
15	Ukraine	6	0.4%
16	Singapore	5	0.4%
17	Spain	4	0.3%
18	Zambia	4	0.3%
19	Iraq	4	0.3%
20	Argentina	3	0.2%
21	Malaysia	3	0.2%
22	Switzerland	2	0.1%
23	Indonesia	2	0.1%
24	Iran, Islamic Republic of	2	0.1%
25	Ireland	2	0.1%
26	Czech Republic	2	0.1%
27	Lithuania	1	0.1%
28	South Africa	1	0.1%
29	Mongolia	1	0.1%
30	Peru	1	0.1%
31	Romania	1	0.1%