Rank	Countries/Territories	Count	Percent
1	United States	308	43.4%
2	China	154	21.7%
3	Germany	95	13.4%
4	Canada	26	3.7%
5	Japan	22	3.1%
6	Netherlands	17	2.4%
7	Ukraine	14	2%
8	France	9	1.3%
9	Czech Republic	7	1%
10	Russia	6	0.8%
11	Singapore	6	0.8%
12	Spain	4	0.6%
13	Taiwan	4	0.6%
14	Portugal	4	0.6%
15	Cyprus	3	0.4%
16	Argentina	3	0.4%
17	Australia	3	0.4%
18	Korea, Republic of	2	0.3%
19	Greece	2	0.3%
20	India	2	0.3%
21	Ireland	2	0.3%
22	United Kingdom	2	0.3%
23	Viet Nam	2	0.3%
24	Thailand	2	0.3%
25	Philippines	2	0.3%
26	Norway	1	0.1%
27	Romania	1	0.1%
28	Macao	1	0.1%
29	Malaysia	1	0.1%
30	Mexico	1	0.1%
31	Mongolia	1	0.1%
32	Bolivia, Plurinational State of	1	0.1%
33	Cambodia	1	0.1%