National Institute of Population and Social Security Research in Japan (IPSS) has released a national population projection, based on the latest results of the Population Census of Japan and the Vital Statistics of Japan. According to it, Japan population will decrease to 28 million in 2110 (population 2010 was 128 million), if the total fertility rate is around 1.1 during 2015-2116.
The national total fertility rate in 2013 was 1.43, and Tokyo's total fertility rate in 2012 was 1.09.
Figure 1: Japan Population Projection to 2110 from 2010, if the total fertility rate is around 1.1 during 2015-2116
Figure 2: Population by three age groups 2010-2110 (x thousand)
Figure 3: Ratio of over 65 year-old people 2010-2110
Children and young/middle aged people decrease rapidly. But the ratio of the elderly population increase year by year. Japan will be nothing but elderly people.
Source is National Institute of Population and Social Security Research.