CREATE TABLE table_66705 ("Year" TEXT, "Births  ( 000s ) " FLOAT, "Deaths" FLOAT, "Natural Growth" FLOAT, "Total Fertility Rate" TEXT)

What is the average births that had a death rate of 0.4
SELECT AVG("Births (000s)") FROM table_66705 WHERE "Deaths" = '0.4'
SELECT AVG("Births (000s)") FROM "table_66705" WHERE "Deaths" = '0.4'