Rank	Countries/Territories	Count	Percent
1	United States	173	28.9%
2	China	158	26.4%
3	Japan	120	20.1%
4	Germany	34	5.7%
5	Singapore	23	3.8%
6	Korea, Republic of	21	3.5%
7	Netherlands	11	1.8%
8	Hong Kong	5	0.8%
9	Canada	4	0.7%
10	United Kingdom	4	0.7%
11	Russia	4	0.7%
12	Taiwan	4	0.7%
13	Spain	3	0.5%
14	India	3	0.5%
15	Ireland	3	0.5%
16	Argentina	3	0.5%
17	Bangladesh	2	0.3%
18	Brazil	2	0.3%
19	Cyprus	2	0.3%
20	Ecuador	2	0.3%
21	France	2	0.3%
22	Italy	2	0.3%
23	Tanzania, United Republic of	2	0.3%
24	Pakistan	2	0.3%
25	Slovakia	2	0.3%
26	Mexico	2	0.3%
27	Norway	1	0.2%
28	Colombia	1	0.2%
29	Iran, Islamic Republic of	1	0.2%
30	Georgia	1	0.2%
31	Australia	1	0.2%