Año | Dato |
1985
|
23,49
|
1986
|
21,64
|
1987
|
21,72
|
1988
|
22,18
|
1989
|
22,02
|
1990
|
22,18
|
1991
|
21,66
|
1992
|
22,54
|
1993
|
23,21
|
1994
|
23,53
|
1995
|
23,63
|
1996
|
22,33
|
1998
|
21,11
|
1999
|
24,14
|
2000
|
23,49
|
2001
|
24,79
|
2002
|
25,23
|
2003
|
27,84
|
2004
|
29,56
|
2005
|
31,11
|
2006
|
32,06
|
2007
|
35,53
|
2008
|
38,47
|
2009
|
40,13
|
2010
|
41,77
|
2011
|
42,71
|
2012
|
43,05
|
2013
|
42,31
|
2014
|
41,49
|
2015
|
42,31
|
2016
|
40,86
|
2017
|
40,70
|
2018
|
39,96
|
2019
|
42,16
|
2020
|
43,65
|
2021
|
45,48
|
2022
|
46,86
|
2023
|
47,95
|
|
|
|