Rank	Countries/Territories	Count	Percent
1	United States	325	40.6%
2	China	176	22%
3	Germany	93	11.6%
4	Netherlands	37	4.6%
5	India	28	3.5%
6	Ireland	22	2.8%
7	Singapore	17	2.1%
8	Japan	15	1.9%
9	Australia	13	1.6%
10	France	11	1.4%
11	Hong Kong	7	0.9%
12	Canada	6	0.8%
13	Egypt	5	0.6%
14	Cyprus	4	0.5%
15	Indonesia	4	0.5%
16	Korea, Republic of	4	0.5%
17	Philippines	4	0.5%
18	Taiwan	3	0.4%
19	Spain	3	0.4%
20	Sweden	3	0.4%
21	Estonia	3	0.4%
22	Cuba	2	0.2%
23	Bangladesh	2	0.2%
24	Nigeria	2	0.2%
25	Tanzania, United Republic of	2	0.2%
26	Russia	2	0.2%
27	Serbia	1	0.1%
28	Thailand	1	0.1%
29	Switzerland	1	0.1%
30	Brazil	1	0.1%
31	Bulgaria	1	0.1%
32	Croatia	1	0.1%
33	Iran, Islamic Republic of	1	0.1%