Year	Number
1996	48.2412071228027
1998	50.5
2000	52.2388076782227
2002	45.7711448669434
2003	53.233829498291
2004	53.8461532592773
2005	54.5454559326172
2006	54.0669860839844
2007	56.4593315124512
2008	58.1730766296387
2009	54.028434753418
2010	51.1848335266113
2011	53.9906120300293
2012	58.2159614562988
2013	56.3380279541016
2014	62.980770111084
2015	60.476188659668
2016	52.3809509277344
2017	52.8571434020996
2018	52.3809509277344
2019	50
2020	52.3809509277344
2021	51.4285697937012
2022	52.3584899902344