Year	hectares
1961	4519316
1962	5001403
1963	5227904
1964	5338487
1965	5221590
1966	4951091
1967	5148430
1968	5162886
1969	5028697
1970	5154905
1971	5088705
1972	4852280
1973	5201762
1974	5226312
1975	5390616
1976	5280047
1977	5253080
1978	5404444
1979	4871890
1980	5261398
1981	5267061
1982	4964269
1983	5226360
1984	5175909
1985	5201393
1986	5189821
1987	4927442
1988	4954300
1989	5189641
1990	5221349
1991	5060927
1992	5575712
1993	5973197
1994	6250953
1995	6544398
1996	6279733
1997	6180703
1998	6253689
1999	7062687
2000	7133931
2001	7238613
2002	7227857
2003	7398371
2004	7696191
2005	8350029
2006	9003315
2007	8895398
2008	8973057
2009	8992633
2010	8963849
2011	8534442
2012	7966343
2013	7966328
2014	7918078
2015	7829649
2016	7793503
2017	7762430
2018	8099349
2019	7835698
2020	7746489
2021	8053779
2022	7871589