Rank	Countries/Territories	Count	Percent
1	United States	256	42.4%
2	China	194	32.1%
3	Japan	37	6.1%
4	Germany	30	5%
5	Australia	16	2.6%
6	Canada	10	1.7%
7	Netherlands	9	1.5%
8	United Kingdom	5	0.8%
9	Chile	5	0.8%
10	Malaysia	5	0.8%
11	Ireland	4	0.7%
12	Argentina	3	0.5%
13	India	3	0.5%
14	Russia	3	0.5%
15	Singapore	2	0.3%
16	Switzerland	2	0.3%
17	Norway	2	0.3%
18	Iran, Islamic Republic of	2	0.3%
19	Cyprus	2	0.3%
20	Mexico	2	0.3%
21	Kazakhstan	2	0.3%
22	Korea, Republic of	2	0.3%
23	Lithuania	2	0.3%
24	Egypt	1	0.2%
25	France	1	0.2%
26	Philippines	1	0.2%
27	Romania	1	0.2%
28	Rwanda	1	0.2%
29	Viet Nam	1	0.2%