Year	hectares
1961	1294000
1962	1296000
1963	1304000
1964	1341000
1965	1375000
1966	1414000
1967	1448000
1968	1488000
1969	1527000
1970	1564000
1971	1591000
1972	1634000
1973	1678000
1974	1711000
1975	1752000
1976	1807000
1977	1845000
1978	1877000
1979	1910000
1980	1943000
1981	1980000
1982	2018000
1983	2051000
1984	2093000
1985	2050000
1986	2060000
1987	2070000
1988	2080000
1989	2090000
1990	2100000
1991	2110000
1992	2150000
1993	2200000
1994	2350000
1995	2600000
1996	2690000
1997	2872000
1998	2974000
1999	3070000
2000	3144000
2001	3150000
2002	3300000
2003	3514000
2004	3579000
2005	3806000
2006	3891500
2007	3977000
2008	4062500
2009	4148000
2010	4233500
2011	4325000
2012	4417500
2013	4510000
2014	4515842.8
2015	4504835.4
2016	4538231.1
2017	4424546.5
2018	4627599.3
2019	4742421.9
2020	4756674.1
2021	4868367.2