Rank	Countries/Territories	Count	Percent
1	United States	216	48.9%
2	China	68	15.4%
3	Germany	49	11.1%
4	Canada	29	6.6%
5	Japan	16	3.6%
6	Korea, Republic of	7	1.6%
7	Norway	6	1.4%
8	Cyprus	6	1.4%
9	United Kingdom	6	1.4%
10	Singapore	6	1.4%
11	Hong Kong	5	1.1%
12	India	5	1.1%
13	Netherlands	4	0.9%
14	Taiwan	4	0.9%
15	New Zealand	3	0.7%
16	Russia	2	0.5%
17	Mexico	2	0.5%
18	Iran, Islamic Republic of	2	0.5%
19	Italy	2	0.5%
20	France	2	0.5%
21	Egypt	1	0.2%
22	Greece	1	0.2%