Year	Number
1978	1385726.25
1979	1433671.25
1980	1453337.75
1981	1487392.375
1982	1485920.375
1983	1530366.375
1984	1561712.125
1985	1669023.625
1986	1764483.625
1987	1877296.25
1988	1979845.375
1989	2068428.75
1990	2177386
1991	2251889
1992	2323098.75
1993	2408155.5
1994	2493854.5
1995	2588933
1996	2749922
1997	2894132.5
1998	3007662.75
1999	3168935
2000	3324822.25
2001	3370528.25
2002	3510211.75
2003	3735093.25
2004	3931228.5
2005	4166435.25
2006	4293069.5
2007	4640923.5
2008	4813078
2009	4930359
2010	5064012
2011	5110069
2012	5159024
2013	5119699.5
2014	5245040.5
2015	5393166
2016	5491788
2017	5657447.5
2018	5857202.5
2019	5994735.5
2020	6136810.5
2021	6373533.5
2022	6558345