Year	sq. km
1961	104300
1962	104700
1963	105070
1964	106200
1965	105830
1966	107400
1967	107670
1968	107680
1969	107670
1970	108010
1971	108050
1972	108050
1973	103220
1974	103330
1975	103470
1976	103620
1977	103560
1978	103670
1979	103770
1980	103850
1981	104210
1982	104410
1983	104380
1984	104220
1985	104290
1986	104350
1987	104220
1988	103730
1989	103950
1990	104280
1991	104160
1992	103980
1993	104460
1994	104210
1995	104500
1996	105040
1997	105190
1998	105130
1999	106090
2000	108120
2001	109390
2002	109250
2003	109820
2004	110820
2005	112630
2006	115970
2007	119840
2008	122770
2009	124410
2010	125260
2011	125580
2012	125490
2013	125870
2014	126320
2015	127489.99900000001
2016	127600
2017	130536
2018	130713
2019	129794
2020	129800
2021	129800