Rank	Countries/Territories	Count	Percent
1	United States	477	43%
2	China	305	27.5%
3	Canada	54	4.9%
4	Germany	43	3.9%
5	India	31	2.8%
6	United Kingdom	23	2.1%
7	Hong Kong	21	1.9%
8	France	19	1.7%
9	Netherlands	16	1.4%
10	Ireland	15	1.4%
11	Japan	13	1.2%
12	Russia	13	1.2%
13	Spain	12	1.1%
14	Italy	9	0.8%
15	Singapore	6	0.5%
16	Korea, Republic of	5	0.5%
17	Israel	5	0.5%
18	Czech Republic	5	0.5%
19	Nigeria	4	0.4%
20	Sweden	4	0.4%
21	Switzerland	4	0.4%
22	Taiwan	4	0.4%
23	Norway	3	0.3%
24	Cyprus	3	0.3%
25	Australia	3	0.3%
26	Iran, Islamic Republic of	3	0.3%
27	Ukraine	2	0.2%
28	Tanzania, United Republic of	1	0.1%
29	Portugal	1	0.1%
30	Saudi Arabia	1	0.1%
31	Mexico	1	0.1%
32	Belarus	1	0.1%
33	Brazil	1	0.1%
34	Algeria	1	0.1%