Lata	Zach
1960	29.4
1961	36.2
1962	34.5
1963	35.4
1964	36.4
1965	37.8
1966	39.7
1967	44.9
1968	45.8
1969	51.1
1970	56.2
1971	58.4
1972	58.2
1973	59.8
1974	60.4
1975	61.2
1976	62.4
1977	62.9
1978	63.7
1979	64.2
1980	64.96
1981	66.2
1982	67.8
1983	71.6
1984	76.1
1985	76.9
1986	78.5
1987	80.9
1988	82.5
1989	82.8
1990	83.4
1992	94.86
1993	95.6
1994	96.1
1995	97.4