What is the total number of population in the year 2005 where the population density 35.9 (/km 2)?
create table table_1480455_1 (population__2005_ varchar, population_density___km_2__ varchar, PRIMARY KEY (population__2005_))
select count(population__2005_) from table_1480455_1 where population_density___km_2__ = "35.9"