Year	Hectares
1990	161110
1991	162160
1992	163210
1993	164260
1994	165310
1995	166360
1996	167410
1997	168460
1998	169510
1999	170560
2000	171610
2001	171860
2002	172110
2003	172350
2004	172600
2005	172850
2006	172850
2007	172850
2008	172850
2009	172840
2010	172840
2011	172810
2012	172780
2013	172760
2014	172730
2015	172700