Year	Index (Units)
1996	49.230
1997	53.610
1998	58.810
1999	60.260
2000	60.600
2001	61.720
2002	65.680
2003	68.170
2004	70.840
2005	74.080
2006	76.440
2007	80.120
2008	85.690
2009	89.410
2010	91.930
2011	94.460
2012	96.090
2013	98.690
2014	99.870
2015	100.830
2016	99.780
2017	99.760
2018	100.080
2019	101.350
2020	101.420
2021	102.740
2022	106.940
2023	123.230