Year	hectares
1992	35055000
1993	35040000
1994	34683000
1995	34716500
1996	33007600
1997	32551800
1998	32154800
1999	32056300
2000	30159300
2001	29359700
2002	28345900
2003	28343600
2004	28478800
2005	28562300
2006	28616000
2007	28641200
2008	28519800
2009	28618200
2010	28683800
2011	29180600
2012	29332500
2013	29394700
2014	29470200
2015	29601100
2016	29642200
2017	29657000
2018	29748000
2019	29378300
2020	29553200
2021	29669700