Year	Index (Units)
1980	29.816
1981	33.085
1982	38.578
1983	38.511
1984	37.305
1985	39.011
1986	39.559
1987	39.361
1988	39.634
1989	38.452
1990	39.042
1991	41.008
1992	40.143
1993	41.086
1994	61.012
1995	64.912
1996	68.097
1997	70.162
1998	69.186
1999	72.307
2000	71.417
2001	76.103
2002	77.226
2003	75.933
2004	78.717
2005	81.532
2006	82.061
2007	84.553
2008	91.908
2009	93.519
2010	94.974
2011	96.362
2012	99.165
2013	98.665
2014	100.472
2015	102.103
2016	102.551
2017	101.853
2018	103.879
2019	103.538
2020	107.200
2021	113.800
2022	122.581
2023	125.784
2024	128.500
2025	130.863
2026	133.481
2027	136.150
2028	138.873
2029	141.651