Table schema:
CREATE TABLE table_25042332_33 (hdi VARCHAR, life_expectancy_at_birth__2001_2002_ VARCHAR)

Question: How many regions had a life expectancy at birth in 2001-2002 of 75.9?
SQL: SELECT COUNT(hdi) FROM table_25042332_33 WHERE life_expectancy_at_birth__2001_2002_ = "75.9"