Year	Number
1996	49
1998	50.7462692260742
2000	48.756217956543
2002	45.2736320495605
2003	44.2786064147949
2004	41.3461532592773
2005	40.3846168518066
2006	36.538459777832
2007	36.538459777832
2008	35.5769233703613
2009	40.7582931518555
2010	38.8625602722168
2011	40.8450698852539
2012	41.3145523071289
2013	42.7230033874512
2014	46.7980308532715
2015	45.8128089904785
2016	44.8275871276855
2017	41.8719215393066
2018	37.8640785217285
2019	39.1304359436035
2020	36.7149772644043
2021	35.2657012939453
2022	38.164249420166