Year	sq. km
1992	42034236.563
1993	42001089.88300003
1994	41922610.601
1995	41844131.323
1996	41765652.04500001
1997	41687172.763000004
1998	41608693.48300002
1999	41530214.202
2000	41459274.92300004
2001	41407133.15400001
2002	41354991.38500003
2003	41302849.61800001
2004	41250707.849999994
2005	41198566.08199999
2006	41180008.31300001
2007	41128320.54500001
2008	41076632.77800002
2009	41024945.00800002
2010	40973257.239999995
2011	40928402.12500001
2012	40883530.20700002
2013	40838658.29100001
2014	40793786.37600002
2015	40748914.46
2016	40716299.75799999
2017	40647868.95899999
2018	40599554.242000006
2019	40548781.900000006
2020	40499687.7
2021	40449474.736999996