Year	Number
1996	166.03
1997	199.77
1998	216.66
1999	202.75
2000	224.92
2001	234.78
2002	274.53
2003	282.4
2004	306.7
2005	348.92
2006	362.95
2007	381.29
2008	438.47
2009	469.42
2010	496.41
2011	575.59
2012	574.73
2013	584.69
2014	724.15
2015	689.1
2016	828.56
2017	774.67
2018	894.82
2019	942.34
2020	959.51