Year	Cubic Meters
1956-01-01	1804999.99991667
1957-01-01	1587777.77766667
1958-01-01	1531666.66658333
1959-01-01	1903425.92600000
1960-01-01	2080185.18516667
1961-01-01	2350833.33333333
1962-01-01	2469259.25925000
1963-01-01	2224444.44441667
1964-01-01	2416851.85191667
1965-01-01	2658796.29641667
1966-01-01	3024166.66666667
1967-01-01	2381203.70358333
1968-01-01	2591203.70375000
1969-01-01	3187685.18533333
1970-01-01	3418425.92600000
1971-01-01	3525092.59258333
1972-01-01	3930370.37033333
1973-01-01	3585277.77775000
1974-01-01	3656759.25925000
1975-01-01	4262777.77783333
1976-01-01	3948333.33325000
1977-01-01	3584629.62958333
1978-01-01	3624722.22216667
1979-01-01	3973611.11108333
1980-01-01	4176296.29625000
1981-01-01	3758333.33333333
1982-01-01	4300833.33341667
1983-01-01	4247407.40750000
1984-01-01	4128611.11108333
1985-01-01	4038518.51850000
1986-01-01	3997222.22225000
1987-01-01	4000821.85191667
1988-01-01	4791869.90750000
1989-01-01	5970703.42575000
1990-01-01	5101254.51082880
1991-01-01	3884001.79596578
1992-01-01	2716571.36605858
1993-01-01	2164279.72611217
1994-01-01	2285617.45559869
1995-01-01	2211863.01191752
1996-01-01	2609871.89821755
1997-01-01	3136590.05795606
1998-01-01	3494091.66078802
1999-01-01	3765541.67865195
2000-01-01	3892267.93617922
2001-01-01	3507822.00707021
2002-01-01	3428814.97760396
2003-01-01	3742003.68117104
2004-01-01	3550341.14758899
2005-01-01	3958103.14930191
2006-01-01	4444955.09258308
2007-01-01	4743884.58062439
2008-01-01	4228481.10671223
2009-01-01	3436209.05959800
2010-01-01	3498884.92708148
2011-01-01	3576178.77367122
2012-01-01	3186276.57544331
2013-01-01	3146459.84704656