Year Number of People 1800 1567000 1820 1567000 1940 3738000 1950 4148000 1951 4219000 1952 4297000 1953 4377000 1954 4459000 1955 4542000 1956 4624000 1957 4707000 1958 4790000 1959 4875000 1960 4963000 1961 5054000 1962 5147000 1963 5242000 1964 5337000 1965 5431000 1966 5524000 1967 5617000 1968 5713000 1969 5815000 1970 5926000 1971 6048000 1972 6180000 1973 6322000 1974 6475000 1975 6637000 1976 6809000 1977 6990000 1978 7185000 1979 7400000 1980 7638000 1981 7903000 1982 8192000 1983 8492000 1984 8787000 1985 9066000 1986 9323000 1987 9563000 1988 9800000 1989 10050000 1990 10340000 1991 10650000 1992 11000000 1993 11370000 1994 11740000 1995 12110000 1996 12450000 1997 12790000 1998 13140000 1999 13510000 2000 13930000 2001 14390000 2002 14890000 2003 15420000 2004 15960000 2005 16490000 2006 17010000 2007 17530000 2008 18040000 2009 18560000 2010 19080000 2011 19620000 2012 20160000 2013 20710000 2050 42330000 2100 56050000