Year	hectares
1961	3520000
1962	3519000
1963	3495000
1964	3471000
1965	3448000
1966	3424000
1967	3400000
1968	3376000
1969	3352000
1970	3329000
1971	3305000
1972	3281000
1973	3257000
1974	3234000
1975	3210000
1976	3186000
1977	3162000
1978	3138000
1979	3115000
1980	3091000
1981	3067000
1982	3043000
1983	3019000
1984	2996000
1985	2972000
1986	2948000
1987	2924000
1988	2901000
1989	2877000
1990	2853000
1991	2829000
1992	2805000
1993	2782000
1994	2758000
1995	2734000
1996	2735000
1997	2736000
1998	2737000
1999	2738000
2000	2739000
2001	2740000
2002	2741000
2003	2742000
2004	2743000
2005	2741000
2006	2750000
2007	2800000
2008	2850000
2009	2850000
2010	2900000
2011	2900000
2012	3000000
2013	3100000
2014	3100000
2015	3100000
2016	3100000
2017	3100000
2018	3100000
2019	3100000
2020	3100000
2021	3100000