Year	Number
1996	56
1998	56.2189064025879
2000	38.3084564208984
2002	50.2487564086914
2003	49.7512435913086
2004	47.1153831481934
2005	52.8846168518066
2006	35.5769233703613
2007	29.8076915740967
2008	28.365385055542
2009	22.748815536499
2010	15.1658763885498
2011	16.4319248199463
2012	19.7183094024658
2013	23.0046939849854
2014	41.8719215393066
2015	48.2758636474609
2016	48.7684745788574
2017	50.2463035583496
2018	51.4563102722168
2019	46.3768119812012
2020	50.2415466308594
2021	39.1304359436035
2022	41.062801361084