Rank	Countries/Territories	Count	Percent
1	United States	250	45.5%
2	China	137	25%
3	Germany	48	8.7%
4	Canada	31	5.6%
5	Ireland	11	2%
6	Japan	5	0.9%
7	France	5	0.9%
8	Belgium	5	0.9%
9	Singapore	5	0.9%
10	Netherlands	5	0.9%
11	Viet Nam	3	0.5%
12	Philippines	3	0.5%
13	Bangladesh	3	0.5%
14	Cyprus	3	0.5%
15	Australia	3	0.5%
16	Greece	3	0.5%
17	India	3	0.5%
18	Afghanistan	2	0.4%
19	Argentina	2	0.4%
20	Egypt	2	0.4%
21	Ukraine	2	0.4%
22	United Kingdom	2	0.4%
23	Malaysia	2	0.4%
24	Sweden	2	0.4%
25	Switzerland	1	0.2%
26	Taiwan	1	0.2%
27	Thailand	1	0.2%
28	Tunisia	1	0.2%
29	Turkey	1	0.2%
30	Mongolia	1	0.2%
31	Pakistan	1	0.2%
32	Sri Lanka	1	0.2%
33	Yemen	1	0.2%
34	Austria	1	0.2%
35	Kazakhstan	1	0.2%
36	Israel	1	0.2%