Año | Dato |
1985
|
33,21
|
1986
|
33,10
|
1987
|
33,29
|
1988
|
33,48
|
1989
|
33,66
|
1990
|
34,20
|
1991
|
34,50
|
1992
|
35,12
|
1993
|
36,51
|
1994
|
37,72
|
1995
|
38,80
|
1996
|
39,79
|
1998
|
40,47
|
1999
|
41,04
|
2000
|
41,90
|
2001
|
43,42
|
2002
|
45,18
|
2003
|
48,39
|
2004
|
51,60
|
2005
|
54,55
|
2006
|
57,23
|
2007
|
60,22
|
2008
|
63,88
|
2009
|
66,51
|
2010
|
68,16
|
2011
|
69,43
|
2012
|
70,43
|
2013
|
71,28
|
2014
|
70,93
|
2015
|
70,84
|
2016
|
70,71
|
2017
|
71,17
|
2018
|
71,81
|
2019
|
73,21
|
2020
|
74,87
|
2021
|
76,56
|
2022
|
78,05
|
2023
|
79,83
|
|
|
|