Year	Index (Units)
1980	14.370
1981	17.342
1982	21.006
1983	25.240
1984	27.682
1985	29.310
1986	32.567
1987	33.788
1988	35.010
1989	36.638
1990	40.709
1991	43.798
1992	49.679
1993	52.575
1994	54.333
1995	58.902
1996	62.443
1997	67.797
1998	70.779
1999	73.853
2000	72.079
2001	74.727
2002	76.160
2003	77.065
2004	75.608
2005	75.936
2006	79.613
2007	83.116
2008	88.747
2009	89.638
2010	91.497
2011	95.590
2012	98.021
2013	99.497
2014	99.259
2015	99.401
2016	97.974
2017	98.741
2018	100.000
2019	101.106
2020	101.718
2021	103.614
2022	111.831
2023	115.351
2024	117.658
2025	120.011
2026	122.412
2027	124.860
2028	127.357
2029	129.904