The population is projected to rise considerably in the years to 2060. The most important reason for this increase is continued immigration. The immigration surplus is expected to increase further in the next few years, followed by a decrease. However, the uncertainty in these projections is considerable. Life expectancy is expected to increase from 78.2 years for men and 82.7 years for women in 2007 to between 84.0 and 87.9 years for men and between 87.7 and 92.7 for women in 2060.