Year	cubic meters
1992	11219.530823477497
1993	11098.662668862848
1994	10933.851918842769
1995	10726.528788120293
1996	10514.281927231757
1997	10374.249497594355
1998	10307.294124143935
1999	10252.739893675887
2000	10116.374977323443
2001	9901.994285990691
2002	9700.760728581245
2003	9510.68955946294
2004	9330.700858259801
2005	9158.417091863426
2006	8991.958389308722
2007	8828.123011116117
2008	8663.922408608656
2009	8496.911601591517
2010	8326.140130801483
2011	8151.763066039172
2012	7975.987075532573
2013	7799.316914538119
2014	7621.5887205290965
2015	7444.806543546194
2016	7273.087353377837
2017	7109.945913545702
2018	6952.134346874038
2019	6796.613431526154
2020	6649.756208788093