Rank	Countries/Territories	Count	Percent
1	United States	147	33.3%
2	China	113	25.6%
3	Bulgaria	22	5%
4	Germany	20	4.5%
5	Netherlands	15	3.4%
6	India	14	3.2%
7	Japan	12	2.7%
8	Turkey	10	2.3%
9	Kenya	9	2%
10	France	7	1.6%
11	Canada	7	1.6%
12	United Kingdom	6	1.4%
13	Iran, Islamic Republic of	5	1.1%
14	Ireland	5	1.1%
15	Italy	5	1.1%
16	South Africa	5	1.1%
17	Australia	4	0.9%
18	Hong Kong	4	0.9%
19	Singapore	4	0.9%
20	Romania	3	0.7%
21	Russia	3	0.7%
22	New Zealand	3	0.7%
23	Austria	3	0.7%
24	Denmark	2	0.5%
25	Norway	2	0.5%
26	Greece	2	0.5%
27	Viet Nam	2	0.5%
28	Korea, Republic of	1	0.2%
29	Malaysia	1	0.2%
30	Nepal	1	0.2%
31	Argentina	1	0.2%
32	Ghana	1	0.2%
33	Brazil	1	0.2%
34	Brunei Darussalam	1	0.2%
35	Cyprus	1	0.2%