Year	cubic meters
1962	27247.100707583948
1963	26617.667897423395
1964	25996.578615830404
1965	25384.19355736419
1966	24782.60247172336
1967	24193.375778283116
1968	23613.985214749373
1969	23045.232497480098
1970	22485.410646081735
1971	21936.501954814536
1972	21403.989274131392
1973	20875.0613651551
1974	20342.6073992919
1975	19815.273495928992
1976	19276.607403715865
1977	18747.94016823932
1978	18252.874020333475
1979	17758.065448595553
1980	17292.761454451822
1981	16923.700791762527
1982	16559.905703853943
1983	16153.810492760162
1984	15734.076107297135
1985	15323.193069862758
1986	14943.208833484414
1987	14583.517043089454
1988	14242.980897880789
1989	13898.607576872706
1990	13501.358649285872
1991	13194.18195027965
1992	11391.403390242041
1993	10088.91645151156
1994	9812.225095495236
1995	9559.173286732548
1996	9348.906102647104
1997	9151.527333561604
1998	8950.74699760883
1999	8748.524434901556
2000	8557.73812710454
2001	8371.631442594968
2002	8171.377666289331
2003	7970.272604443058
2004	7782.155505455176
2005	7598.8510273421425
2006	7421.364489927886
2007	7253.386687051502
2008	7085.573748903135
2009	6915.406805480073
2010	6749.131452942239
2011	6588.797833377536
2012	6106.191818173501
2013	5960.097240700174
2014	5823.37055328339
2015	5693.799746942208
2016	5567.308507190765
2017	5444.5851174950485
2018	5326.31096037718
2019	5208.776856528283
2020	5091.776707123188