Year	hectares
1961	719700
1962	701700
1963	660300
1964	662700
1965	693909
1966	766207
1967	797745
1968	920806
1969	908800
1970	916343
1971	926372
1972	939813
1973	961069
1974	988829
1975	1015151
1976	1037000
1977	1055000
1978	1057500
1979	1087400
1980	1113100
1981	1144000
1982	1176800
1983	1212300
1984	1244200
1985	1427330
1986	1510170
1987	1528440
1988	1670030
1989	1764270
1990	1863672
1991	1818200
1992	1920940
1993	2033426
1994	2092101
1995	1931426
1996	1993683
1997	1910655
1998	1999289
1999	2023140
2000	1998412
2001	1965544
2002	1969559
2003	1971819
2004	1972721
2005	1973988
2006	1975199
2007	1976380
2008	1977476
2009	1978828
2010	3301607
2011	3445330
2012	3426939
2013	3702549
2014	4028084
2015	4058927
2016	4192618
2017	4356643
2018	4349994
2019	4280340
2020	4238642
2021	4416748
2022	4954942