Year	cubic meters
1962	1147.0126056685363
1963	1128.1843001872787
1964	1110.457175219038
1965	1092.955899229466
1966	1075.766214486268
1967	1059.5240617914433
1968	1044.2991708264583
1969	1029.5904289273728
1970	1015.6511847571071
1971	1003.0190874532343
1972	991.6404708308955
1973	981.1231898277149
1974	971.3358782333344
1975	962.6584776518835
1976	955.0277435559505
1977	947.8762831875184
1978	941.3005007718665
1979	935.6112348197078
1980	930.4056568663938
1981	924.2912996459966
1982	917.6500816708573
1983	911.7100032821561
1984	906.3800088825242
1985	901.66447261645
1986	897.7627751642907
1987	894.6944618412813
1988	892.2516863556872
1989	890.3133903133904
1990	888.9916168090535
1991	886.6820358219543
1992	883.220575506527
1993	880.1189920877302
1994	877.6240960471812
1995	875.8561493860249
1996	874.9671887304227
1997	875.0743813224125
1998	875.9251959882627
1999	877.2314575200667
2000	878.6342509203695
2001	879.9640974648235
2002	881.4455707360071
2003	884.1107613961879
2004	888.0363739698779
2005	892.5144810474551
2006	897.4485537616556
2007	902.3316249187901
2008	906.4868196816419
2009	910.4151493080846
2010	914.8461228821312
2011	919.9378122038951
2012	925.2148811561485
2013	930.6654257794324
2014	935.3486979946125
2015	939.1258616479781
2016	943.7256400819153
2017	947.4272612720158
2018	949.839002289112
2019	953.0707940985857
2020	955.7305604404007