Year	Index (Units)
1986	37.995
1987	39.378
1988	40.607
1989	42.227
1990	44.692
1991	47.173
1992	48.999
1993	51.557
1994	54.797
1995	56.667
1996	58.463
1997	60.220
1998	61.343
1999	62.738
2000	65.294
2001	67.178
2002	69.405
2003	71.942
2004	73.762
2005	76.268
2006	79.021
2007	83.280
2008	90.740
2009	88.801
2010	90.646
2011	94.612
2012	95.153
2013	92.896
2014	93.287
2015	93.731
2016	92.857
2017	91.902
2018	95.235
2019	98.986
2020	97.686
2021	98.413
2022	103.845
2023	107.340
2024	109.857
2025	111.850
2026	113.992
2027	116.269
2028	118.592
2029	120.962