Year	per person
1800	3.559
1820	3.559
1850	4.523
1870	4.879
1890	6.308
1900	7.247
1910	8.345
1913	8.783
1920	8.103
1921	8.738
1922	8.408
1923	9.014
1924	9.862
1925	10.92
1926	10.79
1927	11.53
1928	12.48
1929	12.75
1930	12.26
1931	11.77
1932	11.23
1933	10.7
1934	10.24
1935	10.1
1936	10.89
1937	12.08
1948	12.94
1949	13.66
1950	14.67
1951	14.77
1952	15.08
1953	14.86
1954	15.31
1955	16.44
1956	17.23
1957	18.11
1958	19.32
1959	20.03
1960	21.41
1961	22.06
1962	22.23
1963	21.67
1964	22.52
1965	23.19
1966	24.06
1967	25
1968	26.08
1969	26.63
1970	27.1
1971	27.91
1972	28.75
1973	29.51
1974	30.36
1975	31.01
1976	31.27
1977	32.46
1978	32.64
1979	32.71
1980	33.46
1981	33.16
1982	33.72
1983	34.15
1984	34.87
1985	35.07
1986	35.66
1987	35.77
1988	36.5
1989	36.75
1990	35.68
1991	31.53
1992	31.35
1993	31.36
1994	32.05
1995	33.98
1996	35.39
1997	35.19
1998	35
1999	35.54
2000	36.89
2001	37.84
2002	38.59
2003	39.99
2004	41.8
2005	44.48
2006	47.34
2007	49.97
2008	50.7
2009	48.18