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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%.