Indian Institute of Foreign Trade 2010 Solved Paper

We know that, female population = Total population - Male population.
Therefore, the percentage increase in Female population in 1996 $=\frac{\left(650-320\right)-\left(600-300\right)}{\left(600-300\right)}\times 100=10\%$
The percentage increase in Female population in 1999 $=\frac{\left(750-400\right)-\left(700-380\right)}{\left(700-380\right)}\times 100=9.37\%$
The percentage increase in Female population in 2004 $=\frac{\left(845-475\right)-\left(800-450\right)}{\left(800-450\right)}\times 100=5.71\%$
The percentage increase in Female population in 2005
Hence, option D is the correct answer.