Year	Index (Units)
1980	39.645
1981	45.641
1982	47.747
1983	48.450
1984	49.443
1985	49.691
1986	50.772
1987	54.345
1988	54.796
1989	57.204
1990	59.682
1991	62.987
1992	66.553
1993	67.069
1994	68.856
1995	72.892
1996	73.566
1997	73.562
1998	75.918
1999	77.751
2000	81.520
2001	85.819
2002	85.599
2003	86.485
2004	87.748
2005	91.179
2006	94.429
2007	97.095
2008	102.483
2009	102.323
2010	105.648
2011	108.574
2012	113.110
2013	114.771
2014	118.808
2015	117.639
2016	114.018
2017	114.136
2018	117.053
2019	117.684
2020	115.618
2021	118.404
2022	125.950
2023	130.548
2024	132.845
2025	135.443
2026	138.152
2027	140.915
2028	143.734
2029	146.608