Year Population 0 0.3 1000 0.32 1750 0.8 1800 1.0 1930 2.0 1950 2.486 1955 2.697 1960 2.978 1965 3.289 1970 3.632 1974 4.0 1975 4.01 1980 4.427 1985 4.837 1987 5.0 1990 5.231 1992 5.4 1995 5.702