Year	Number
1996	34.5
1998	31.343282699585
2000	36.8159217834473
2002	54.7263679504395
2003	51.243782043457
2004	45.6730766296387
2005	50
2006	50.961540222168
2007	51.4423065185547
2008	52.4038467407227
2009	51.1848335266113
2010	52.6066360473633
2011	53.521125793457
2012	54.4600944519043
2013	52.1126747131348
2014	54.679801940918
2015	54.679801940918
2016	55.1724128723145
2017	55.1724128723145
2018	54.3689308166504
2019	55.0724639892578
2020	55.5555572509766
2021	53.6231880187988
2022	49.7584533691406