Year	Index (Units)
1980	9.175
1981	10.489
1982	11.710
1983	13.487
1984	15.285
1985	16.450
1986	17.716
1987	19.621
1988	21.143
1989	23.560
1990	26.167
1991	27.161
1992	28.923
1993	32.044
1994	34.868
1995	36.707
1996	37.913
1997	39.301
1998	41.503
1999	42.920
2000	44.433
2001	46.922
2002	48.865
2003	50.713
2004	52.618
2005	56.237
2006	60.910
2007	65.706
2008	73.614
2009	78.775
2010	87.075
2011	91.508
2012	100.000
2013	105.189
2014	111.182
2015	116.362
2016	119.933
2017	122.192
2018	123.437
2019	124.672
2020	125.419
2021	128.004
2022	135.462
2023	141.733
2024	143.837
2025	146.962
2026	149.967
2027	152.897
2028	155.769
2029	158.603