Rank	Countries/Territories	Count	Percent
1	United States	272	40.2%
2	China	236	34.9%
3	Japan	40	5.9%
4	Germany	36	5.3%
5	Australia	16	2.4%
6	Canada	10	1.5%
7	Netherlands	10	1.5%
8	United Kingdom	5	0.7%
9	Chile	5	0.7%
10	Malaysia	5	0.7%
11	Ireland	4	0.6%
12	Cyprus	4	0.6%
13	India	3	0.4%
14	Argentina	3	0.4%
15	Russia	3	0.4%
16	Singapore	3	0.4%
17	Switzerland	2	0.3%
18	Norway	2	0.3%
19	Iran, Islamic Republic of	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	Italy	1	0.1%
25	Egypt	1	0.1%
26	France	1	0.1%
27	Philippines	1	0.1%
28	Romania	1	0.1%
29	Rwanda	1	0.1%
30	Viet Nam	1	0.1%