Year	Number
1996	1.16631174087524
1998	1.13685023784637
2000	1.19157075881958
2002	1.16790759563446
2003	1.34463798999786
2004	1.37272918224335
2005	1.23385429382324
2006	1.20378243923187
2007	1.2426346540451
2008	1.24973607063293
2009	1.15272116661072
2010	1.16721260547638
2011	1.1433470249176
2012	1.16538798809052
2013	1.15657246112823
2014	1.18429243564606
2015	1.2028272151947
2016	1.19637012481689
2017	1.17113673686981
2018	1.100830078125
2019	1.08001840114594
2020	1.11863851547241
2021	1.07145929336548
2022	1.07677125930786