Year	cubic meters
1962	5256.968772713533
1963	5148.804827536878
1964	5039.808609126126
1965	4929.354457385757
1966	4819.512576065758
1967	4710.2755935796395
1968	4600.9965085120875
1969	4492.8342866432085
1970	4384.834665693788
1971	4280.193542817413
1972	4177.4636159752945
1973	4073.3267935488525
1974	3972.239312633262
1975	3878.3008123621307
1976	3794.6870678915793
1977	3716.314447020686
1978	3644.0608146218733
1979	3630.730037010345
1980	3776.038548748658
1981	4226.730236450371
1982	4673.736051772506
1983	4738.003480699142
1984	4602.835346573489
1985	4485.255779915586
1986	4512.634515270315
1987	4567.577773304382
1988	4540.875584824326
1989	4417.619960633993
1990	4408.686243290662
1991	4388.019283460183
1992	3910.4509226798104
1993	3366.952875513434
1994	3050.6830715558253
1995	2871.6884529255044
1996	2756.246932834968
1997	2650.5413316083545
1998	2549.5951686280077
1999	2447.7171001773518
2000	2412.6307848003953
2001	2394.7829387029024
2002	2245.2107250502086
2003	2082.1253841333655
2004	2001.8212965000478
2005	1931.4911755022524
2006	1853.1660487088286
2007	1820.2313288178984
2008	1784.146704310207
2009	1721.7261796626926
2010	1672.5983899351506
2011	1612.0122709861346
2012	1547.6025306370323
2013	1494.8697749664573
2014	1441.181603859371
2015	1396.8922155300106
2016	1361.2922454239865
2017	1322.8248761103662
2018	1285.2039579157442
2019	1248.3618064406944
2020	1209.835824123998