Rank	Countries/Territories	Count	Percent
1	United States	505	39.6%
2	China	414	32.4%
3	Germany	134	10.5%
4	Japan	47	3.7%
5	France	43	3.4%
6		19	1.5%
7	Canada	16	1.3%
8	Korea, Republic of	11	0.9%
9	Netherlands	9	0.7%
10	India	8	0.6%
11	Cyprus	7	0.5%
12	Singapore	7	0.5%
13	Italy	6	0.5%
14	Mongolia	6	0.5%
15	Argentina	6	0.5%
16	Latvia	4	0.3%
17	Russia	4	0.3%
18	Norway	4	0.3%
19	Pakistan	3	0.2%
20	Ireland	3	0.2%
21	Australia	3	0.2%
22	Bangladesh	3	0.2%
23	Brazil	2	0.2%
24	Hong Kong	2	0.2%
25	Thailand	2	0.2%
26	United Kingdom	2	0.2%
27	Viet Nam	2	0.2%
28	Switzerland	1	0.1%
29	Portugal	1	0.1%
30	Iran, Islamic Republic of	1	0.1%
31	Malaysia	1	0.1%