Year	hectares
1961	1536555
1962	1541998
1963	1569717
1964	1567605
1965	1596967
1966	1604664
1967	1637727
1968	1685196
1969	1704169
1970	1738944
1971	1756753
1972	1776923
1973	1761836
1974	1732993
1975	1719594
1976	1787311
1977	1821271
1978	1845072
1979	1850217
1980	1816317
1981	1787302
1982	1767772
1983	1697885
1984	1674107
1985	1600599
1986	1578349
1987	1498961
1988	1586765
1989	1561598
1990	1570303
1991	1561552
1992	1611927
1993	1444000
1994	1410350
1995	1454400
1996	1523000
1997	1535200
1998	1530166
1999	1496784
2000	1514258
2001	1538062
2002	1527934
2003	1484586
2004	1490600
2005	1508600
2006	1493900
2007	1448300
2008	1513200
2009	1499300
2010	1508400
2011	1496500
2012	1503300
2013	1443760
2014	1450871
2015	1459400
2016	1471275
2017	1449769
2018	1416280
2019	1373650
2020	1366920
2021	1359580
2022	1306950