Year	%
1997	10.109242240332932
1998	10.846650799047946
2000	11.512089498376037
2001	12.224264705882355
2002	13.375042272573554
2003	13.628875243372772
2004	14.669990814853698
2005	16.17931212160248
2006	16.58393788977982
2007	17.279364672729606
2008	17.7757755180847
2009	18.44231254733653
2010	18.71616395978345
2011	20.443622920517562
2012	21.288753799392097
2013	22.37535953978907
2014	22.072794571252313
2015	23.562687601015927
2016	23.819915010910762
2017	24.027280858676217
2018	24.084821428571434
2019	24.08902214022141
2020	24.871013133208262
2021	25.937758845107105
2022	26.35228848821082
2023	27.051206592113008