Year	Index (Units)
1980	29.607
1981	31.319
1982	36.763
1983	41.067
1984	45.889
1985	51.873
1986	55.049
1987	52.775
1988	51.813
1989	52.046
1990	52.215
1991	51.299
1992	51.296
1993	50.914
1994	67.260
1995	72.692
1996	74.752
1997	76.086
1998	76.839
1999	77.467
2000	78.051
2001	80.434
2002	82.363
2003	82.323
2004	82.747
2005	84.159
2006	85.938
2007	90.977
2008	96.740
2009	94.566
2010	95.727
2011	98.986
2012	100.389
2013	101.101
2014	100.000
2015	100.858
2016	102.060
2017	103.227
2018	103.696
2019	104.753
2020	107.403
2021	109.743
2022	120.375
2023	127.533
2024	132.507
2025	135.157
2026	137.860
2027	140.618
2028	143.430
2029	146.290