Year	Percent
1990	12.134
1991	12.235
1992	12.359
1993	12.447
1994	12.536
1995	12.633
1996	12.744
1997	12.863
1998	13.624
1999	14.42
2000	15.249
2001	16.11
2002	17.003
2003	17.932
2004	18.904
2005	19.806
2006	20.746
2007	21.723
2008	22.73
2009	22.779
2010	22.889
2011	23.073
2012	23.404
2013	23.588
2014	23.617
2015	23.711
2016	23.923
2017	24.088
2018	24.254
2019	24.424
2020	24.601
2021	24.783
2022	24.97
2023	25.16
2024	25.35
2025	25.539
2026	25.727
2027	25.915
2028	26.102
2029	26.29
2030	26.48