Year	Index (Units)
1980	3.419
1981	3.837
1982	4.201
1983	4.696
1984	5.188
1985	5.432
1986	5.748
1987	6.280
1988	6.787
1989	7.222
1990	7.785
1991	8.520
1992	9.163
1993	10.048
1994	10.905
1995	11.932
1996	12.884
1997	13.688
1998	21.687
1999	26.127
2000	27.090
2001	30.197
2002	33.793
2003	36.088
2004	38.275
2005	42.280
2006	47.818
2007	50.840
2008	55.858
2009	58.542
2010	61.549
2011	64.839
2012	67.419
2013	71.741
2014	76.332
2015	81.187
2016	84.053
2017	87.253
2018	90.124
2019	92.668
2020	94.550
2021	96.026
2022	100.000
2023	103.713
2024	106.364
2025	109.116
2026	111.880
2027	114.696
2028	117.579
2029	120.532