Answer the question on the basis of the table given below
Each of the following statements pertains to the number of states with females outnumbering males in a given census year. Which of these statements is $\text{NOT}$ correct?
- This number never exceeded $5$ in any census year.
- This number registered its sharpest decline in the year $1971.$
- The number of consecutive censuses in which this number remained unchanged never exceeded $3.$
- Prior to the $1971$ census, this number was never less than $4.$