The data gives the sex and age specific population for the all census results in Japan.
JpopA data frame with 86 observations on 57 variables.
  [, 1]  | 
 Age  | 
Factor w/86 levels | Ages (years old, combined for 85+) | 
  [, 2]  | 
 M1888  | 
numeric | Age specific population of males in 1888 | 
  [, 3]  | 
 F1888  | 
numeric | Age specific population of females in 1888 | 
  [, 4]  | 
 M1893  | 
numeric | Age specific population of males in 1893 | 
  [, 5]  | 
 F1893  | 
numeric | Age specific population of females in 1893 | 
  [, 6]  | 
 M1898  | 
numeric | Age specific population of males in 1898 | 
  [, 7]  | 
 F1898  | 
numeric | Age specific population of females in 1898 | 
  [, 8]  | 
 M1903  | 
numeric | Age specific population of males in 1903 | 
  [, 9]  | 
 F1903  | 
numeric | Age specific population of females in 1903 | 
  [,10]  | 
 M1908  | 
numeric | Age specific population of males in 1908 | 
  [,11]  | 
 F1908  | 
numeric | Age specific population of females in 1908 | 
  [,12]  | 
 M1913  | 
numeric | Age specific population of males in 1913 | 
  [,13]  | 
 F1913  | 
numeric | Age specific population of females in 1913 | 
  [,14]  | 
 M1918  | 
numeric | Age specific population of males in 1918 | 
  [,15]  | 
 F1918  | 
numeric | Age specific population of females in 1918 | 
  [,16]  | 
 M1920  | 
numeric | Age specific population of males in 1920 | 
  [,17]  | 
 F1920  | 
numeric | Age specific population of females in 1920 | 
  [,18]  | 
 M1925  | 
numeric | Age specific population of males in 1925 | 
  [,19]  | 
 F1925  | 
numeric | Age specific population of females in 1925 | 
  [,20]  | 
 M1930  | 
numeric | Age specific population of males in 1930 | 
  [,21]  | 
 F1930  | 
numeric | Age specific population of females in 1930 | 
  [,22]  | 
 M1935  | 
numeric | Age specific population of males in 1935 | 
  [,23]  | 
 F1935  | 
numeric | Age specific population of females in 1935 | 
  [,24]  | 
 M1940  | 
numeric | Age specific population of males in 1940 | 
  [,25]  | 
 F1940  | 
numeric | Age specific population of females in 1940 | 
  [,26]  | 
 M1947  | 
numeric | Age specific population of males in 1947 | 
  [,27]  | 
 F1947  | 
numeric | Age specific population of females in 1947 | 
  [,28]  | 
 M1950  | 
numeric | Age specific population of males in 1950 | 
  [,29]  | 
 F1950  | 
numeric | Age specific population of females in 1950 | 
  [,30]  | 
 M1955  | 
numeric | Age specific population of males in 1955 | 
  [,31]  | 
 F1955  | 
numeric | Age specific population of females in 1955 | 
  [,32]  | 
 M1960  | 
numeric | Age specific population of males in 1960 | 
  [,33]  | 
 F1960  | 
numeric | Age specific population of females in 1960 | 
  [,34]  | 
 M1965  | 
numeric | Age specific population of males in 1965 | 
  [,35]  | 
 F1965  | 
numeric | Age specific population of females in 1965 | 
  [,36]  | 
 M1970  | 
numeric | Age specific population of males in 1970 | 
  [,37]  | 
 F1970  | 
numeric | Age specific population of females in 1970 | 
  [,38]  | 
 M1975  | 
numeric | Age specific population of males in 1975 | 
  [,39]  | 
 F1975  | 
numeric | Age specific population of females in 1975 | 
  [,40]  | 
 M1980  | 
numeric | Age specific population of males in 1980 | 
  [,41]  | 
 F1980  | 
numeric | Age specific population of females in 1980 | 
  [,42]  | 
 M1985  | 
numeric | Age specific population of males in 1985 | 
  [,43]  | 
 F1985  | 
numeric | Age specific population of females in 1985 | 
  [,44]  | 
 M1990  | 
numeric | Age specific population of males in 1990 | 
  [,45]  | 
 F1990  | 
numeric | Age specific population of females in 1990 | 
  [,46]  | 
 M1995  | 
numeric | Age specific population of males in 1995 | 
  [,47]  | 
 F1995  | 
numeric | Age specific population of females in 1995 | 
  [,48]  | 
 M2000  | 
numeric | Age specific population of males in 2000 | 
  [,49]  | 
 F2000  | 
numeric | Age specific population of females in 2000 | 
  [,50]  | 
 M2005  | 
numeric | Age specific population of males in 2005 | 
  [,51]  | 
 F2005  | 
numeric | Age specific population of females in 2005 | 
  [,52]  | 
 M2010  | 
numeric | Age specific population of males in 2010 | 
  [,53]  | 
 F2010  | 
numeric | Age specific population of females in 2010 | 
  [,54]  | 
 M2015  | 
numeric | Age specific population of males in 2015 | 
  [,55]  | 
 F2015  | 
numeric | Age specific population of females in 2015 | 
  [,56]  | 
 M2015J  | 
numeric | Age specific population of Japanese males in 2015 | 
  [,57]  | 
 F2015J  | 
numeric | Age specific population of Japanese females in 2015 | 
Japanese population data by sex and age given as national official census record.
Age: Ages, combined for 85+.
M1888-M2015: Age specific number of males' population in 1988-2015.
F1888-F2015: Age specific number of females' population in 1988-2015.
M2015J, F2015J: Age specific number of the Japanese population in
    2015 for males and females, respectively.
Statistics Bureau, Ministry of Internal Affairs and Communications: Population Census, 1888-2015.