Year	Index (Units)
1997	71.668
1998	73.582
1999	75.426
2000	74.582
2001	74.340
2002	77.326
2003	78.074
2004	79.640
2005	81.038
2006	83.858
2007	85.155
2008	89.805
2009	89.386
2010	90.246
2011	96.898
2012	102.895
2013	102.347
2014	103.340
2015	100.000
2016	107.346
2017	109.682
2018	106.973
2019	102.484
2020	109.467
2021	115.923
2022	117.159
2023	124.974
2024	130.132
2025	133.061
2026	135.742
2027	138.417
2028	141.144
2029	143.925