Regional totals	Periodo	Total
National Total	2022	3,74
National Total	2021	3,11
National Total	2020	1,91
National Total	2019	3,51
National Total	2018	3,54
National Total	2017	3,68
National Total	2016	3,73
National Total	2015	3,59
National Total	2014	3,45
National Total	2013	3,32
National Total	2012	3,56
National Total	2011	3,46
National Total	2010	3,62
National Total	2009	3,78
National Total	2008	4,25
National Total	2007	4,48
National Total	2006	4,64
National Total	2005	4,76
National Total	2004	5
National Total	2003	4,99
National Total	2002	5,06
National Total	2001	5,06
National Total	2000	5,29
National Total	1999	5,11
National Total	1998	5,1
National Total	1997	4,86
National Total	1996	4,82
National Total	1995	5,01
National Total	1994	5,01
National Total	1993	5,08
National Total	1992	5,52
National Total	1991	5,57
National Total	1990	5,64
National Total	1989	5,67
National Total	1988	5,61
National Total	1987	5,55
National Total	1986	5,36
National Total	1985	5,17
National Total	1984	5,13
National Total	1983	5,12
National Total	1982	5,07
National Total	1981	5,32
National Total	1980	5,86
National Total	1979	6,59
National Total	1978	6,96
National Total	1977	7,14
National Total	1976	7,18