Rank	Countries/Territories	Count	Percent
1	United States	434	48.7%
2	China	245	27.5%
3	Germany	54	6.1%
4	Japan	31	3.5%
5	Mexico	19	2.1%
6	France	10	1.1%
7	Switzerland	9	1%
8	Sri Lanka	8	0.9%
9	Cyprus	7	0.8%
10	Italy	6	0.7%
11	Russia	5	0.6%
12	Canada	5	0.6%
13	Australia	5	0.6%
14	Ireland	5	0.6%
15	Hong Kong	5	0.6%
16	Iran, Islamic Republic of	4	0.4%
17	Singapore	4	0.4%
18	Mongolia	4	0.4%
19	Netherlands	4	0.4%
20	United Kingdom	3	0.3%
21	Hungary	3	0.3%
22	Faroe Islands	3	0.3%
23	Brazil	2	0.2%
24		2	0.2%
25	Argentina	2	0.2%
26	Sweden	2	0.2%
27	Norway	2	0.2%
28	Slovenia	2	0.2%
29	Spain	1	0.1%
30	Romania	1	0.1%
31	Turkey	1	0.1%
32	Ukraine	1	0.1%
33	Greece	1	0.1%
34	Korea, Republic of	1	0.1%