Rank	Countries/Territories	Count	Percent
1	United States	297	37.5%
2	China	255	32.2%
3	Germany	66	8.3%
4	Iran, Islamic Republic of	30	3.8%
5	France	17	2.1%
6	Japan	15	1.9%
7	Netherlands	15	1.9%
8	Cyprus	12	1.5%
9	Australia	10	1.3%
10	Canada	9	1.1%
11	Israel	9	1.1%
12	Belgium	7	0.9%
13	Palestine, State of	6	0.8%
14	Russia	6	0.8%
15	Mongolia	4	0.5%
16	South Africa	4	0.5%
17	Argentina	4	0.5%
18	Greece	4	0.5%
19	Korea, Republic of	4	0.5%
20	Ireland	3	0.4%
21	Singapore	3	0.4%
22	Romania	2	0.3%
23	Norway	2	0.3%
24	Hong Kong	2	0.3%
25	India	1	0.1%
26	Latvia	1	0.1%
27	Iraq	1	0.1%
28	Oman	1	0.1%
29	Switzerland	1	0.1%
30	Taiwan	1	0.1%