Rank	Countries/Territories	Count	Percent
1	United States	558	49.7%
2	China	242	21.6%
3	Germany	130	11.6%
4	Japan	52	4.6%
5	Singapore	21	1.9%
6	Canada	16	1.4%
7	South Africa	14	1.2%
8	Korea, Republic of	10	0.9%
9	Russia	9	0.8%
10	Cyprus	8	0.7%
11		7	0.6%
12	Hong Kong	5	0.4%
13	Taiwan	5	0.4%
14	Netherlands	4	0.4%
15	India	4	0.4%
16	Greece	3	0.3%
17	France	3	0.3%
18	Viet Nam	3	0.3%
19	Egypt	2	0.2%
20	Australia	2	0.2%
21	Hungary	2	0.2%
22	Iran, Islamic Republic of	2	0.2%
23	Italy	2	0.2%
24	Romania	2	0.2%
25	Latvia	2	0.2%
26	Thailand	2	0.2%
27	Ukraine	2	0.2%
28	Uzbekistan	2	0.2%
29	Switzerland	1	0.1%
30	United Kingdom	1	0.1%
31	Malaysia	1	0.1%
32	Mongolia	1	0.1%
33	Pakistan	1	0.1%
34	Indonesia	1	0.1%
35	Brazil	1	0.1%
36	Bulgaria	1	0.1%