Year	cubic meters
1961	418371.3464070709
1962	406996.9196759448
1963	395391.8124760684
1964	383925.2517741388
1965	372534.4104152778
1966	361249.6957897299
1967	350115.5381275821
1968	339162.162355142
1969	328383.38587467506
1970	317838.4310156778
1971	307605.63015441806
1972	297686.1948810509
1973	288053.36567616736
1974	278721.519061618
1975	269680.2727461116
1976	260903.71554354482
1977	252399.79064101574
1978	244170.74474647368
1979	236281.37878889628
1980	228773.98815673185
1981	221630.68861821434
1982	214834.4304965389
1983	208318.25766994932
1984	202056.72476683717
1985	196067.10035333355
1986	190323.1687405214
1987	184815.55407703112
1988	179566.8092490138
1989	174565.28649838574
1990	170116.14455932757
1991	167338.9582709482
1992	174010.52122562024
1993	182398.36571064324
1994	155392.70229827726
1995	153544.02353583454
1996	150699.35664398115
1997	148116.9941393214
1998	145384.57810651846
1999	141858.87668785793
2000	137941.13489791504
2001	134276.25100707187
2002	130846.07332549333
2003	127634.02754688975
2004	120001.66156146777
2005	117589.77149895299
2006	115854.20194278585
2007	114434.26924916447
2008	113086.58227701283
2009	111799.42609627938
2010	110557.37927984624
2011	109346.15206685255
2012	108161.32677894182
2013	107012.17880911908
2014	105926.88057559036
2015	104941.11189144246
2016	104033.15189773808
2017	103158.09242171557
2018	102349.3103231089
2019	101634.09380826859
2020	100970.0895527025