Regional totals;Sex;Period;Total
National Total;Total;2021;21.15
National Total;Total;2020;20.41
National Total;Total;2019;21.57
National Total;Total;2018;21.25
National Total;Total;2017;21.15
National Total;Total;2016;21.21
National Total;Total;2015;20.83
National Total;Total;2014;21.11
National Total;Total;2013;21.01
National Total;Total;2012;20.59
National Total;Total;2011;20.67
National Total;Total;2010;20.54
National Total;Total;2009;20.24
National Total;Total;2008;20.02
National Total;Total;2007;19.79
National Total;Total;2006;19.83
National Total;Total;2005;19.25
National Total;Total;2004;19.37
National Total;Total;2003;18.93
National Total;Total;2002;19.01
National Total;Total;2001;18.97
National Total;Total;2000;18.74
National Total;Total;1999;18.32
National Total;Total;1998;18.37
National Total;Total;1997;18.44
National Total;Total;1996;18.28
National Total;Total;1995;18.20
National Total;Total;1994;18.16
National Total;Total;1993;17.90
National Total;Total;1992;17.92
National Total;Total;1991;17.57
National Total;Total;1990;17.40
National Total;Total;1989;17.40
National Total;Total;1988;17.31
National Total;Total;1987;17.28
National Total;Total;1986;17.02
National Total;Total;1985;16.75
National Total;Total;1984;16.89
National Total;Total;1983;16.58
National Total;Total;1982;16.77
National Total;Total;1981;16.40
National Total;Total;1980;16.32
National Total;Total;1979;16.11
National Total;Total;1978;15.77
National Total;Total;1977;15.62
National Total;Total;1976;15.31
National Total;Total;1975;15.19
National Total;Males;2021;19.03
National Total;Males;2020;18.35
National Total;Males;2019;19.52
National Total;Males;2018;19.22
National Total;Males;2017;19.12
National Total;Males;2016;19.14
National Total;Males;2015;18.79
National Total;Males;2014;19.06
National Total;Males;2013;18.92
National Total;Males;2012;18.51
National Total;Males;2011;18.55
National Total;Males;2010;18.40
National Total;Males;2009;18.12
National Total;Males;2008;17.94
National Total;Males;2007;17.64
National Total;Males;2006;17.70
National Total;Males;2005;17.13
National Total;Males;2004;17.22
National Total;Males;2003;16.83
National Total;Males;2002;16.86
National Total;Males;2001;16.81
National Total;Males;2000;16.61
National Total;Males;1999;16.17
National Total;Males;1998;16.22
National Total;Males;1997;16.30
National Total;Males;1996;16.16
National Total;Males;1995;16.10
National Total;Males;1994;16.09
National Total;Males;1993;15.84
National Total;Males;1992;15.88
National Total;Males;1991;15.57
National Total;Males;1990;15.43
National Total;Males;1989;15.46
National Total;Males;1988;15.41
National Total;Males;1987;15.39
National Total;Males;1986;15.19
National Total;Males;1985;14.89
National Total;Males;1984;15.04
National Total;Males;1983;14.83
National Total;Males;1982;15.01
National Total;Males;1981;14.64
National Total;Males;1980;14.60
National Total;Males;1979;14.40
National Total;Males;1978;14.13
National Total;Males;1977;14.00
National Total;Males;1976;13.70
National Total;Males;1975;13.62
National Total;Females;2021;23.07
National Total;Females;2020;22.31
National Total;Females;2019;23.40
National Total;Females;2018;23.07
National Total;Females;2017;22.97
National Total;Females;2016;23.05
National Total;Females;2015;22.65
National Total;Females;2014;22.92
National Total;Females;2013;22.84
National Total;Females;2012;22.43
National Total;Females;2011;22.53
National Total;Females;2010;22.41
National Total;Females;2009;22.10
National Total;Females;2008;21.83
National Total;Females;2007;21.67
National Total;Females;2006;21.67
National Total;Females;2005;21.11
National Total;Females;2004;21.23
National Total;Females;2003;20.76
National Total;Females;2002;20.87
National Total;Females;2001;20.83
National Total;Females;2000;20.56
National Total;Females;1999;20.20
National Total;Females;1998;20.22
National Total;Females;1997;20.26
National Total;Females;1996;20.08
National Total;Females;1995;19.98
National Total;Females;1994;19.90
National Total;Females;1993;19.63
National Total;Females;1992;19.62
National Total;Females;1991;19.23
National Total;Females;1990;19.04
National Total;Females;1989;19.00
National Total;Females;1988;18.87
National Total;Females;1987;18.81
National Total;Females;1986;18.49
National Total;Females;1985;18.25
National Total;Females;1984;18.38
National Total;Females;1983;17.99
National Total;Females;1982;18.19
National Total;Females;1981;17.82
National Total;Females;1980;17.71
National Total;Females;1979;17.50
National Total;Females;1978;17.11
National Total;Females;1977;16.94
National Total;Females;1976;16.63
National Total;Females;1975;16.49