Year	Index (Units)
1980	20.305
1981	24.266
1982	28.260
1983	32.415
1984	35.896
1985	39.116
1986	41.392
1987	43.346
1988	45.552
1989	48.397
1990	51.492
1991	54.692
1992	57.417
1993	60.000
1994	62.500
1995	65.867
1996	68.492
1997	69.758
1998	71.175
1999	72.350
2000	74.217
2001	75.942
2002	77.925
2003	80.117
2004	81.925
2005	83.733
2006	85.600
2007	87.333
2008	90.383
2009	91.075
2010	92.550
2011	95.267
2012	98.425
2013	99.650
2014	99.883
2015	99.992
2016	99.942
2017	101.267
2018	102.525
2019	103.175
2020	103.025
2021	105.025
2022	114.200
2023	120.942
2024	122.965
2025	125.424
2026	127.933
2027	130.491
2028	133.101
2029	135.763