Rank	Countries/Territories	Count	Percent
1	United States	198	34.3%
2	China	164	28.4%
3	Germany	72	12.5%
4	Chile	43	7.4%
5	Japan	19	3.3%
6	Norway	10	1.7%
7	Hungary	8	1.4%
8	Korea, Republic of	7	1.2%
9	Argentina	7	1.2%
10	Hong Kong	6	1%
11	Spain	6	1%
12	Netherlands	6	1%
13	Singapore	5	0.9%
14	United Kingdom	3	0.5%
15	Canada	3	0.5%
16	Brazil	2	0.3%
17	Colombia	2	0.3%
18	Costa Rica	2	0.3%
19	Denmark	2	0.3%
20	Lithuania	2	0.3%
21	Iran, Islamic Republic of	2	0.3%
22	Ireland	2	0.3%
23	Turkey	1	0.2%
24	Ukraine	1	0.2%
25	Martinique	1	0.2%
26	Mongolia	1	0.2%
27	France	1	0.2%
28	Georgia	1	0.2%
29	Cyprus	1	0.2%