Year	%
1997	14.511278195488726
1998	15.159627206028164
1999	16.055572965632507
2000	16.562282533054976
2001	16.53758972421609
2002	18.335267433273547
2003	17.76365705614567
2004	18.812457553119238
2005	19.161619984859957
2006	19.532967032967033
2007	21.00993528393037
2008	21.348832918165886
2009	21.894621894621896
2010	21.99346998004716
2011	22.704174228675132
2012	23.75078779148285
2013	24.79762547220723
2014	25.348495964783567
2015	25.74311926605505
2016	26.005879110784498
2017	27.384785208352497
2018	27.95383769921231
2019	29.455944312145082
2020	30.29414459818565
2021	31.13371826597012
2022	30.923279428356526
2023	31.117994931005352