Year	Number
1973	16914.9375
1974	17241.986328125
1975	19620.400390625
1976	21228.90625
1977	22091.166015625
1978	22668.31640625
1979	23263.3515625
1980	24340.935546875
1981	23148.419921875
1982	23454.248046875
1983	23713.646484375
1984	23700.83984375
1985	23788.5859375
1986	26212.39453125
1987	26104.380859375
1988	26502.17578125
1989	26164.587890625
1990	26047.265625
1991	25128.767578125
1992	25999.564453125
1993	26623.39453125
1994	29628.458984375
1995	28445.328125
1996	30469.1171875
1997	33371.12890625
1998	29948.2421875
1999	31157.310546875
2000	31918.67578125
2001	32251.03515625
2002	32281.935546875
2003	31784.736328125
2004	33412.40234375
2005	33930.96875
2006	34158.95703125
2007	34424.98828125
2008	36568.5390625
2009	38916.984375
2010	40785.51953125
2011	38763.7265625
2012	37533.21875
2013	37885.234375
2014	37936.08984375
2015	38060.22265625
2016	37636.07421875
2017	39365.2578125
2018	38949.45703125
2019	41600.90625
2020	41328.47265625
2021	38457.1640625
2022	41466.6640625