The overall rate of population change in a country A was 2% in year 2009. The rate of net migration in the same year was -0.05%. What has been the rate of crude natural increase in country A in year 1999.

To calculate the rate of crude natural increase in country A in year 2009, we need to subtract the rate of net migration from the overall rate of population change.

Crude natural increase = Overall rate of population change - Rate of net migration
Crude natural increase = 2% - (-0.05%)
Crude natural increase = 2% + 0.05%
Crude natural increase = 2.05%

Therefore, the rate of crude natural increase in country A in year 2009 was 2.05%.