Year	Index (Units)
1980	27.684
1981	30.129
1982	33.878
1983	38.205
1984	43.385
1985	48.219
1986	48.297
1987	47.144
1988	47.549
1989	46.659
1990	47.455
1991	49.126
1992	48.473
1993	49.427
1994	56.533
1995	61.892
1996	63.612
1997	65.855
1998	68.361
1999	69.915
2000	71.308
2001	73.754
2002	75.532
2003	77.344
2004	77.806
2005	79.650
2006	81.706
2007	82.286
2008	86.344
2009	89.420
2010	90.004
2011	92.241
2012	94.138
2013	97.020
2014	98.919
2015	99.289
2016	100.000
2017	101.025
2018	102.876
2019	104.133
2020	104.656
2021	108.157
2022	114.965
2023	118.518
2024	122.443
2025	127.052
2026	130.700
2027	133.991
2028	136.268
2029	138.786