Year	Index (Units)
1980	6.258
1981	7.076
1982	7.712
1983	8.117
1984	11.905
1985	14.669
1986	14.621
1987	15.066
1988	16.909
1989	18.831
1990	21.317
1991	25.442
1992	27.625
1993	29.492
1994	33.175
1995	35.467
1996	38.408
1997	40.558
1998	44.358
1999	47.108
2000	50.192
2001	52.900
2002	54.358
2003	55.567
2004	58.233
2005	62.100
2006	65.483
2007	67.392
2008	72.925
2009	76.017
2010	78.858
2011	82.600
2012	85.208
2013	87.417
2014	90.558
2015	91.183
2016	92.308
2017	94.942
2018	99.983
2019	102.375
2020	104.825
2021	108.942
2022	115.283
2023	122.175
2024	126.553
2025	130.292
2026	134.201
2027	138.227
2028	142.373
2029	146.645