Regional totals	Periodo	Total
National Total	2023	137,33
National Total	2022	133,64
National Total	2021	129,16
National Total	2020	125,82
National Total	2019	123
National Total	2018	120,56
National Total	2017	118,36
National Total	2016	116,33
National Total	2015	114,69
National Total	2014	112,63
National Total	2013	109,89
National Total	2012	108,34
National Total	2011	107,35
National Total	2010	106,12
National Total	2009	105,26
National Total	2008	105,25
National Total	2007	106,34
National Total	2006	107,39
National Total	2005	106,93
National Total	2004	108,15
National Total	2003	109,16
National Total	2002	109,03
National Total	2001	106,48
National Total	2000	103,33
National Total	1999	99,88
National Total	1998	95,46
National Total	1997	90,81
National Total	1996	86,18
National Total	1995	81,38
National Total	1994	76,78
National Total	1993	72,54
National Total	1992	68,63
National Total	1991	64,77
National Total	1990	60,96
National Total	1989	57,51
National Total	1988	54,34
National Total	1987	51,35
National Total	1986	48,85
National Total	1985	46,74
National Total	1984	45,15
National Total	1983	43,56
National Total	1982	42,09
National Total	1981	40,85
National Total	1980	39,47
National Total	1979	38,26
National Total	1978	37,35
National Total	1977	36,5
National Total	1976	35,82
National Total	1975	34,99