Year	% of population
2000	57.0729057082999
2001	58.0593665909167
2002	59.0445107661833
2003	60.0285956771106
2004	61.0116188363532
2005	61.9945613405031
2006	62.987007020763
2007	63.9778142639389
2008	64.9674578476413
2009	65.9554776456119
2010	66.9420991365654
2011	67.9273254225164
2012	68.9111598605716
2013	69.8936029746752
2014	70.8744369725595
2015	71.8538830119437
2016	72.8319443096933
2017	72.874822150898
2018	72.920573308785
2019	72.9693990502626
2020	73.0210976490331