Year	Index (Units)
1980	19.779
1981	22.657
1982	25.923
1983	29.078
1984	32.359
1985	35.211
1986	38.308
1987	40.318
1988	42.268
1989	45.139
1990	48.173
1991	51.032
1992	54.678
1993	57.176
1994	59.874
1995	62.672
1996	64.928
1997	66.146
1998	67.313
1999	68.817
2000	71.215
2001	73.227
2002	75.856
2003	78.210
2004	80.598
2005	83.326
2006	86.293
2007	88.747
2008	92.413
2009	92.192
2010	94.075
2011	96.944
2012	99.306
2013	100.825
2014	100.633
2015	100.000
2016	99.663
2017	101.693
2018	103.458
2019	104.264
2020	103.913
2021	107.038
2022	115.947
2023	119.889
2024	123.095
2025	126.001
2026	128.382
2027	130.693
2028	133.045
2029	135.440