Year Number of People 1600 2750000 1700 2750000 1800 4687000 1820 5215000 1850 6000000 1870 8252000 1890 9690000 1900 11170000 1910 13050000 1913 13590000 1920 12420000 1921 12610000 1922 12800000 1923 12990000 1924 13180000 1925 13380000 1926 13580000 1927 13780000 1928 13990000 1929 14190000 1930 14410000 1931 14620000 1932 14820000 1933 15020000 1934 15230000 1935 15440000 1936 15650000 1937 15860000 1938 16080000 1939 16300000 1940 16300000 1947 15600000 1948 15820000 1949 16040000 1950 16300000 1951 16520000 1952 16710000 1953 16940000 1954 17150000 1955 17360000 1956 17510000 1957 17660000 1958 17800000 1959 17970000 1960 18130000 1961 18320000 1962 18500000 1963 18680000 1964 18850000 1965 19040000 1966 19220000 1967 19390000 1968 19550000 1969 19700000 1970 19840000 1971 20010000 1972 20200000 1973 20370000 1974 20550000 1975 20730000 1976 20930000 1977 21130000 1978 21310000 1979 21490000 1980 21620000 1981 21710000 1982 21880000 1983 22020000 1984 22090000 1985 22220000 1986 22340000 1987 22440000 1988 22540000 1989 22630000 1990 22720000 1991 23070000 1992 23090000 1993 22920000 1994 22920000 1995 23030000 1996 23050000 1997 23080000 1998 23250000 1999 23270000 2000 23320000 2001 23440000 2002 23520000 2003 23610000 2004 23720000 2005 23810000 2006 23890000 2007 23950000 2008 23990000