Year	Number
1996	62.5
1998	52.1739120483398
2000	40.7608680725098
2002	40.5405387878418
2003	43.2432441711426
2004	29.8507461547852
2005	29.4117641448975
2006	26.470588684082
2007	23.7864074707031
2008	24.2718448638916
2009	29.6650714874268
2010	27.2727279663086
2011	24.1706161499023
2012	30.8056869506836
2013	28.9099521636963
2014	31.730770111084
2015	30
2016	30.4761905670166
2017	30.4761905670166
2018	35.7142868041992
2019	33.8095245361328
2020	38.5714302062988
2021	39.0476188659668
2022	41.5094337463379