Year	billion cubic meters
1962	28.55
1963	28.55
1964	28.55
1965	28.55
1966	28.55
1967	28.55
1968	28.55
1969	28.55
1970	28.55
1971	28.55
1972	28.55
1973	28.55
1974	28.55
1975	28.55
1976	28.55
1977	28.55
1978	28.55
1979	28.55
1980	28.55
1981	28.55
1982	28.55
1983	28.55
1984	28.55
1985	28.55
1986	28.55
1987	28.55
1988	28.55
1989	28.55
1990	28.55
1991	28.55
1992	28.55
1993	28.55
1994	28.55
1995	28.55
1996	28.55
1997	28.55
1998	28.55
1999	28.55
2000	28.55
2001	28.55
2002	28.55
2003	28.55
2004	28.55
2005	28.55
2006	28.55
2007	28.55
2008	28.55
2009	28.55
2010	28.55
2011	28.55
2012	28.55
2013	28.55
2014	28.55
2015	28.55
2016	28.55
2017	28.55
2018	28.55
2019	28.55
2020	28.55