Year	Number
1996	92.81
1997	71.24
1998	90.92
1999	89.99
2000	85.53
2001	83.76
2002	71
2003	127.15
2004	142.48
2005	162.53
2006	181.09
2007	175.91
2008	160.23
2009	187.38
2010	206.42
2011	179.59
2012	157.6
2013	235.41
2014	208.62
2015	175.81
2016	222.28
2017	237.99
2018	334.45
2019	391.41
2020	492.66