Year	billion cubic meters
1961	64.85
1962	64.85
1963	64.85
1964	64.85
1965	64.85
1966	64.85
1967	64.85
1968	64.85
1969	64.85
1970	64.85
1971	64.85
1972	64.85
1973	64.85
1974	64.85
1975	64.85
1976	64.85
1977	64.85
1978	64.85
1979	64.85
1980	64.85
1981	64.85
1982	64.85
1983	64.85
1984	64.85
1985	64.85
1986	64.85
1987	64.85
1988	64.85
1989	64.85
1990	64.85
1991	64.85
1992	64.85
1993	64.85
1994	64.85
1995	64.85
1996	64.85
1997	64.85
1998	64.85
1999	64.85
2000	64.85
2001	64.85
2002	64.85
2003	64.85
2004	64.85
2005	64.85
2006	64.85
2007	64.85
2008	64.85
2009	64.85
2010	64.85
2011	64.85
2012	64.85
2013	64.85
2014	64.85
2015	64.85
2016	64.85
2017	64.85
2018	64.85
2019	64.85
2020	64.85