Year	cubic meters
1962	3197.5102053867386
1963	3161.655442789845
1964	3126.693625713928
1965	3092.018469656992
1966	3057.2936836312497
1967	3022.456854428403
1968	2988.04780876494
1969	2952.610599872053
1970	2910.0785721214475
1971	2863.114495948693
1972	2818.0392083188513
1973	2774.8487707419945
1974	2733.7342810278838
1975	2690.6553539557117
1976	2645.012828312217
1977	2599.991333362222
1978	2555.431569801613
1979	2511.2377891062506
1980	2466.4359178841264
1981	2421.1316369270994
1982	2377.292105805347
1983	2335.7209592027407
1984	2296.650717703349
1985	2259.8699821470273
1986	2225.3542022105185
1987	2193.3031144904226
1988	2163.565556036348
1989	2135.8850039513873
1990	2108.2072508274714
1991	2079.4632212271604
1992	2048.9004234394206
1993	2018.9104613210402
1994	1992.5478709625997
1995	1969.1758342741616
1996	1948.4441673323852
1997	1929.8313327415183
1998	1912.594434350196
1999	1895.6627236882011
2000	1880.8777429467084
2001	1868.0648093951206
2002	1854.152374242115
2003	1839.9602568584519
2004	1826.6063480659284
2005	1813.938301911891
2006	1802.1265092809515
2007	1790.852326317172
2008	1779.6127562642369
2009	1767.9505916741314
2010	1755.0530903559832
2011	1742.7168956403032
2012	1732.8619948707285
2013	1724.3559530515352
2014	1716.2078670968626
2015	1708.2045062434875
2016	1700.5549477646205
2017	1693.3558361508892
2018	1686.4543982730706
2019	1679.8911430539301
2020	1673.7615559287424