Year	Hectares
1990	294640
1991	285450
1992	276260
1993	267070
1994	257880
1995	248690
1996	239510
1997	230320
1998	221130
1999	211940
2000	202750
2001	204190
2002	205640
2003	207080
2004	208530
2005	209970
2006	211420
2007	212860
2008	214310
2009	215750
2010	217200
2011	177280
2012	137360
2013	97440
2014	57520
2015	17600