Year	Number
2004	50.480770111084
2005	53.8461532592773
2006	37.019229888916
2007	52.8846168518066
2008	51.4423065185547
2009	54.028434753418
2010	48.8151664733887
2011	50.7042236328125
2012	53.051643371582
2013	49.7652587890625
2018	56.7961158752441
2019	57.487922668457
2020	52.6570053100586
2021	54.5893707275391
2022	56.038646697998