Year	hectares
1961	19507000
1962	19340000
1963	19260000
1964	19180000
1965	19100000
1966	19020000
1967	18930000
1968	18850000
1969	18770000
1970	17688000
1971	17689000
1972	17684000
1973	17719000
1974	17688000
1975	17712000
1976	17736000
1977	17782000
1978	17785000
1979	17585000
1980	17660000
1981	17599000
1982	17795000
1983	18328000
1984	18241000
1985	18292500
1986	18344000
1987	19234000
1988	19698000
1989	20656000
1990	21709000
1991	22423000
1992	22429000
1993	22531000
1994	22549000
1995	22560000
1996	22717000
1997	22785000
1998	22831000
1999	22918000
2000	22905000
2001	23151000
2002	23184000
2003	23652000
2004	23214000
2005	23296000
2006	23363000
2007	23519000
2008	23306000
2009	23144000
2010	22933000
2011	22716000
2012	22552000
2013	22491000
2014	22161000
2015	22048000
2016	21749000
2017	20257000
2018	19900000
2019	19400000
2020	20071000
2021	20084000