Year	hectares
1961	1260100
1962	1241100
1963	1437150
1964	1408250
1965	1401160
1966	1771160
1967	1651350
1968	1695350
1969	1701150
1970	1748150
1971	1736508
1972	1796602
1973	1741245
1974	1800000
1975	2032000
1976	2368000
1977	2623500
1978	2752000
1979	2767000
1980	2901800
1981	2834200
1982	2103220
1983	2209160
1984	2472780
1985	2650260
1986	3353760
1987	3166190
1988	3003270
1989	3213620
1990	2628757
1991	3126123
1992	3253187
1993	3190865
1994	2563969
1995	2733286
1996	3068876
1997	3055237
1998	3726193
1999	2270084
2000	2514775
2001	2220331
2002	3354160
2003	4789490
2004	4893210
2005	4896810
2006	4330825
2007	4485537
2008	5736322
2009	5229954
2010	5244863
2011	5721440
2012	6175739
2013	6253484
2014	6515202
2015	6217515
2016	6309990
2017	6114868
2018	5587407
2019	5524632
2020	6994355
2021	7251917
2022	6447519