Rank	Countries/Territories	Count	Percent
1	United States	232	28.8%
2	Japan	214	26.6%
3	China	207	25.7%
4	Germany	50	6.2%
5	Singapore	36	4.5%
6	Switzerland	13	1.6%
7	France	12	1.5%
8	Netherlands	7	0.9%
9	Korea, Republic of	6	0.7%
10	Argentina	3	0.4%
11	Ireland	3	0.4%
12	Taiwan	2	0.2%
13	Thailand	2	0.2%
14	United Kingdom	2	0.2%
15	Bulgaria	2	0.2%
16	Hong Kong	2	0.2%
17	India	1	0.1%
18	Georgia	1	0.1%
19	Malaysia	1	0.1%
20	New Zealand	1	0.1%
21	Canada	1	0.1%
22	Australia	1	0.1%
23	Brazil	1	0.1%
24	Colombia	1	0.1%
25	Cyprus	1	0.1%
26	Egypt	1	0.1%
27	Spain	1	0.1%
28	Uzbekistan	1	0.1%
29	Viet Nam	1	0.1%