CREATE TABLE table_28223 ("Region" TEXT, "Land area  ( km 2  ) " TEXT, "Rainfall by depth  ( mm/year ) " FLOAT, "Rainfall by volume  ( km 3 /year ) " TEXT, "Surface run off  ( km 3 /year ) " TEXT, "Infiltration  ( km 3 /year ) " TEXT, "Evapotranspiration  ( km 3 /year ) " TEXT)

In the region where the rainfall by volume (km 3 /year) was 13.2, what was the evapotranspiration (km 3 /year)?
SELECT "Evapotranspiration (km 3 /year)" FROM table_28223 WHERE "Rainfall by volume (km 3 /year)" = '13.2'
SELECT "Evapotranspiration (km 3 /year)" FROM "table_28223" WHERE "Rainfall by volume (km 3 /year)" = '13.2'