Año | Dato |
1985
|
26,92
|
1986
|
26,22
|
1987
|
26,07
|
1988
|
25,81
|
1989
|
25,89
|
1990
|
25,92
|
1991
|
26,39
|
1992
|
26,63
|
1993
|
27,54
|
1994
|
28,09
|
1995
|
29,03
|
1996
|
30,65
|
1998
|
31,44
|
1999
|
32,29
|
2000
|
33,11
|
2001
|
34,90
|
2002
|
34,72
|
2003
|
35,63
|
2004
|
36,72
|
2005
|
37,68
|
2006
|
38,24
|
2007
|
40,67
|
2008
|
43,75
|
2009
|
49,27
|
2010
|
50,79
|
2011
|
52,52
|
2012
|
52,64
|
2013
|
54,43
|
2014
|
54,13
|
2015
|
53,80
|
2016
|
55,09
|
2017
|
54,73
|
2018
|
57,95
|
2019
|
58,43
|
2020
|
59,80
|
2021
|
62,25
|
2022
|
63,21
|
2023
|
65,68
|
|
|
|