Year	base year varies by country
1995	8.964316465044448
1996	10.992568835634392
1997	11.90812175423592
1998	12.762743090819997
1999	18.413569775166813
2000	23.196584165322555
2001	25.85879593904565
2002	28.483125828411655
2003	32.39269086124089
2004	35.42637330697052
2005	39.22143011202285
2006	44.62767788476495
2007	51.12464419317655
2008	57.27763335246201
2009	57.603479050600626
2010	72.92589726788314
2011	77.82110532128766
2012	82.59334863920262
2013	86.32106144184678
2014	90.44073533083264
2015	100.00000016309434
2016	103.93086992604785
2017	109.49844633422077
2018	112.68421296586972
2019	117.90764984341375
2020	121.53644706891511
2021	130.48025847842214
2022	153.77574512173922
2023	168.1886215406453