Year Number of People 1800 1783000 1820 1783000 1970 4880000 1971 4966000 1972 5055000 1973 5155000 1974 5272000 1975 5415000 1976 5585000 1977 5781000 1978 6000000 1979 6235000 1980 6483000 1981 6744000 1982 7020000 1983 7309000 1984 7608000 1985 7917000 1986 8231000 1987 8550000 1988 8891000 1989 9224000 1990 9632000 2008 17840000