Year	cubic meters
1961	105823.03728738434
1962	104976.25942656581
1963	104185.50256004508
1964	103401.44745785376
1965	102600.79588135696
1966	101784.91302452536
1967	100936.9965536093
1968	100092.07422744378
1969	99279.90878723355
1970	98561.23813556194
1971	97872.4527220968
1972	97126.77637754755
1973	96449.74059564531
1974	95853.26721632577
1975	95325.7207510369
1976	94879.67667390601
1977	94479.50326535507
1978	94119.47901172577
1979	93799.4856743385
1980	93498.66115791484
1981	93177.50412103123
1982	92835.91106902981
1983	92529.07641448376
1984	92268.32498449917
1985	91992.42098043692
1986	91664.8789615665
1987	91236.84439938332
1988	90747.37830348963
1989	90373.5384386812
1990	90063.0512088607
1991	89634.918385295
1992	89119.05349032907
1993	88590.16635238803
1994	88087.17771219152
1995	87631.0795781963
1996	87188.01753620358
1997	86716.5460845096
1998	86201.76086277583
1999	85613.5025492429
2000	85059.63192336974
2001	84630.27756737135
2002	84175.10272337307
2003	83682.83329919571
2004	83189.78377189448
2005	82625.12569509468
2006	81962.34152248697
2007	81118.62154404412
2008	80113.88755365742
2009	79109.89358269656
2010	78130.56066653959
2011	77123.60450692578
2012	76117.2548451522
2013	75202.43136154002
2014	74359.11012000235
2015	73622.84327951606
2016	72977.09684500142
2017	72390.05428875066
2018	71913.78779333107
2019	71429.9604928742
2020	71010.64694974881