Question: Name the total number of median income for population 2006 for 365540
Schema: create table table_151994_1 (median_monthly_per_capita___labour_force_income__hkd_ varchar, population__2006_est_ varchar, PRIMARY KEY (median_monthly_per_capita___labour_force_income__hkd_))
SQL: select count(median_monthly_per_capita___labour_force_income__hkd_) from table_151994_1 where population__2006_est_ = 365540