Year	Number
1996	313391.54
1997	311116.82
1998	302600.31
1999	296940.93
2000	306472.5
2001	306733.89
2002	320944.51
2003	330542.54
2004	354737.37
2005	385577.39
2006	389728.34
2007	392348.65
2008	395157.82
2009	399757.26
2010	409511.63
2011	423222.43
2012	425131.48
2013	426596.66
2014	428140.59
2015	428203.78
2016	428476.45
2017	430198.17
2018	435033.88
2019	438020.45
2020	455855.57