Year	billion cubic meters
1961	10.823
1962	10.823
1963	10.823
1964	10.823
1965	10.823
1966	10.823
1967	10.823
1968	10.823
1969	10.823
1970	10.823
1971	10.823
1972	10.823
1973	10.823
1974	10.823
1975	10.823
1976	10.823
1977	10.823
1978	10.823
1979	10.823
1980	10.823
1981	10.823
1982	10.823
1983	10.823
1984	10.823
1985	10.823
1986	10.823
1987	10.823
1988	10.823
1989	10.823
1990	10.823
1991	10.823
1992	10.823
1993	10.823
1994	10.823
1995	10.823
1996	10.823
1997	10.823
1998	10.823
1999	10.823
2000	10.823
2001	10.823
2002	10.823
2003	10.823
2004	10.823
2005	10.823
2006	10.823
2007	10.823
2008	10.823
2009	10.823
2010	10.823
2011	10.823
2012	10.823
2013	10.823
2014	10.823
2015	10.823
2016	10.823
2017	10.823
2018	10.823
2019	10.823
2020	10.823