CREATE TABLE table_26069 ("Period" CLOB, "Live births per year" CLOB, "Deaths per year" CLOB, "Natural change per year" CLOB, "CBR*" CLOB, "CDR*" CLOB, "NC*" CLOB, "TFR*" CLOB, "IMR*" FLOAT, "Life expectancy total" CLOB, "Life expectancy males" CLOB, "Life expectancy females" CLOB)

How many imr* have tfr* of 4.31?
SELECT "IMR*" FROM table_26069 WHERE "TFR*" = '4.31'
SELECT "IMR*" FROM "table_26069" WHERE "TFR*" = '4.31'