Year	cubic meters
1961	3156.1173444428664
1962	3117.692907248636
1963	3085.4674483184203
1964	3051.1060259344013
1965	3016.5912518853693
1966	2994.9535033468605
1967	2985.119180883297
1968	2977.5197260681853
1969	2962.962962962963
1970	2948.3652788711297
1971	2920.3816354721234
1972	2885.1702250432777
1973	2853.4741047224998
1974	2816.504717645402
1975	2785.9033291544783
1976	2772.148775680493
1977	2767.33876100709
1978	2762.37752308657
1979	2755.9141918557225
1980	2746.1211039406835
1981	2738.038195632829
1982	2735.7909855687026
1983	2735.0651766031583
1984	2732.2553675156696
1985	2726.980196669812
1986	2714.772434200703
1987	2697.2353337828727
1988	2677.7346364975233
1989	2651.8164942985945
1990	2618.82938326568
1991	2583.9793281653747
1992	2549.8820679543574
1993	2515.881501981257
1994	2481.8514611900478
1995	2447.231569287244
1996	2414.146900838916
1997	2384.0743831207537
1998	2354.603249352484
1999	2323.0152738254255
2000	2292.0009168003667
2001	2264.877413509994
2002	2241.273043088474
2003	2214.2018909284147
2004	2182.9533175433044
2005	2149.807162297542
2006	2115.78864964021
2007	2083.363715720854
2008	2046.4545175483474
2009	2008.9074958365393
2010	1972.569449238884
2011	1929.209583541527
2012	1883.43070670087
2013	1840.4004711425207
2014	1797.5298345014282
2015	1755.6056488367358
2016	1718.171727827853
2017	1676.9069786160821
2018	1644.8721111933546
2019	1612.9006243538317
2020	1586.2466074150684