How many times was the GFR 2006 equal to 53.2?
create table table_12251936_1 (whites_as__percentage_of_pop varchar, gfr_2006 varchar, PRIMARY KEY (whites_as__percentage_of_pop))
select count(whites_as__percentage_of_pop) from table_12251936_1 where gfr_2006 = "53.2"