Year	hectares
1961	2933000
1962	2933000
1963	3033000
1964	3033000
1965	3132000
1966	3132000
1967	3232000
1968	3401000
1969	3187000
1970	3148000
1971	3229000
1972	3229000
1973	3279000
1974	3329000
1975	3328000
1976	3326000
1977	3124000
1978	3123000
1979	3122000
1980	3121000
1981	3120000
1982	3118000
1983	3116000
1984	3114000
1985	3110000
1986	3107000
1987	3104000
1988	3098000
1989	3094000
1990	3092000
1991	2973000
1992	3044000
1993	3082000
1994	3178000
1995	3077000
1996	3217000
1997	2938000
1998	2685000
1999	3407000
2000	3322000
2001	3099000
2002	3050000
2003	2932000
2004	2987000
2005	3126000
2006	2838000
2007	2850000
2008	3620000
2009	3620000
2010	3620000
2011	3300000
2012	3300000
2013	3300000
2014	3300000
2015	3655000
2016	3610000
2017	3645000
2018	3680000
2019	3715000
2020	3750000
2021	3830000