However, it has the youngest population of any European Union member state[citation needed] and its population size is predicted to grow for many decades, in contrast with the declining population predicted for most European countries. A report published in 2008 predicted that the population would reach 6.7 million by 2060.[3] The Republic has also been experiencing a baby boom, with increasing birth rates and overall fertility rates.[4] Despite this, the total fertility rate is still below replacement depending on when the measurement is taken. The Irish fertility rate is still the highest of any European country.[5] This increase is significantly fuelled by non-Irish immigration – in 2009, a quarter of all children born in the Republic were born to mothers who had immigrated from other countries.[6]