Rank	Countries/Territories	Count	Percent
1	United States	533	46.8%
2	China	288	25.3%
3	Germany	158	13.9%
4	Australia	36	3.2%
5	France	24	2.1%
6	Netherlands	21	1.8%
7	Japan	12	1.1%
8	Bulgaria	8	0.7%
9	Cyprus	7	0.6%
10	Russia	7	0.6%
11	Canada	5	0.4%
12	Argentina	4	0.4%
13	Hong Kong	4	0.4%
14	Iran, Islamic Republic of	3	0.3%
15	Bangladesh	3	0.3%
16	South Africa	3	0.3%
17	Sweden	3	0.3%
18	United Kingdom	3	0.3%
19	South Sudan	2	0.2%
20	Greece	2	0.2%
21	Latvia	2	0.2%
22	Malaysia	2	0.2%
23	Mauritius	2	0.2%
24	Mongolia	1	0.1%
25	Singapore	1	0.1%
26	Nigeria	1	0.1%
27	Norway	1	0.1%
28	Portugal	1	0.1%
29	Switzerland	1	0.1%
30	Ukraine	1	0.1%
31	Venezuela, Bolivarian Republic of	1	0.1%