Year	Number
1996	20.5
1998	33.3333320617676
2000	27.8606967926025
2002	40.2985076904297
2003	42.7860679626465
2004	37.019229888916
2005	25
2006	28.8461532592773
2007	29.8076915740967
2008	28.8461532592773
2009	27.014217376709
2010	25.5924167633057
2011	20.1877937316895
2012	16.4319248199463
2013	16.9014091491699
2014	21.1822662353516
2015	13.7931032180786
2016	21.1822662353516
2017	34.4827575683594
2018	46.6019401550293
2019	43.961353302002
2020	46.3768119812012
2021	50.7246360778809
2022	52.6570053100586