Year	Number
1996	1109.18
1997	1236.52
1998	1232.88
1999	1425.5
2000	1717.04
2001	1679.44
2002	1806.9
2003	2121.09
2004	1901.2
2005	2338.94
2006	2355.96
2007	2723.17
2008	3012.82
2009	3166.36
2010	3180.34
2011	3619.13
2012	3539.77
2013	3545.35
2014	3476.44
2015	3550.52
2016	3396.83
2017	3458.75
2018	3352.53
2019	3700.61
2020	3827.5