Rank	Countries/Territories	Count	Percent
1	United States	393	42.2%
2	China	223	24%
3	Germany	79	8.5%
4	Japan	46	4.9%
5		29	3.1%
6	Canada	27	2.9%
7	India	24	2.6%
8	Netherlands	18	1.9%
9	Switzerland	15	1.6%
10	Singapore	10	1.1%
11	Ghana	9	1%
12	Ireland	8	0.9%
13	Iran, Islamic Republic of	7	0.8%
14	Cyprus	6	0.6%
15	France	5	0.5%
16	Taiwan	4	0.4%
17	Thailand	4	0.4%
18	Mauritius	3	0.3%
19	Qatar	3	0.3%
20	Russia	3	0.3%
21	Hong Kong	3	0.3%
22	Greece	2	0.2%
23	Australia	2	0.2%
24	South Africa	2	0.2%
25	Sweden	2	0.2%
26	Spain	1	0.1%
27	Argentina	1	0.1%
28	Norway	1	0.1%
29	Korea, Republic of	1	0.1%