Rank	Countries/Territories	Count	Percent
1	United States	197	27.8%
2	China	171	24.1%
3	Japan	139	19.6%
4	Germany	65	9.2%
5	Korea, Republic of	24	3.4%
6	Singapore	22	3.1%
7	Spain	12	1.7%
8	Canada	12	1.7%
9	France	9	1.3%
10	Russia	7	1%
11	United Kingdom	6	0.8%
12	Netherlands	6	0.8%
13	Cyprus	4	0.6%
14	South Africa	4	0.6%
15	Taiwan	3	0.4%
16	Greece	3	0.4%
17	Hong Kong	3	0.4%
18	Malaysia	3	0.4%
19	Italy	3	0.4%
20	Iran, Islamic Republic of	3	0.4%
21	Portugal	2	0.3%
22	Indonesia	2	0.3%
23	Czech Republic	2	0.3%
24	Ukraine	2	0.3%
25	Slovakia	2	0.3%
26	Switzerland	1	0.1%
27	Brazil	1	0.1%
28	Ireland	1	0.1%