Rank	Countries/Territories	Count	Percent
1	United States	589	48.3%
2	China	296	24.3%
3	Germany	113	9.3%
4	Canada	46	3.8%
5	France	30	2.5%
6	Netherlands	15	1.2%
7	New Zealand	15	1.2%
8	Japan	13	1.1%
9	Singapore	12	1%
10	India	11	0.9%
11	Latvia	9	0.7%
12	Korea, Republic of	8	0.7%
13	Australia	8	0.7%
14	Bulgaria	7	0.6%
15	Cyprus	6	0.5%
16	Russia	6	0.5%
17	Mongolia	4	0.3%
18	United Kingdom	4	0.3%
19	Argentina	4	0.3%
20	Bolivia, Plurinational State of	4	0.3%
21	Hong Kong	4	0.3%
22	Iran, Islamic Republic of	2	0.2%
23	Lithuania	2	0.2%
24	Turkey	2	0.2%
25	Palestine, State of	2	0.2%
26	Portugal	2	0.2%
27	Nigeria	2	0.2%
28	Norway	1	0.1%
29	Thailand	1	0.1%
30	Viet Nam	1	0.1%
31	Malaysia	1	0.1%