Año | Dato |
1985
|
13,62
|
1986
|
12,31
|
1987
|
12,23
|
1988
|
12,04
|
1989
|
11,85
|
1990
|
12,04
|
1991
|
11,04
|
1992
|
10,88
|
1993
|
10,81
|
1994
|
10,96
|
1995
|
11,50
|
1996
|
11,15
|
1998
|
11,65
|
1999
|
11,58
|
2000
|
11,81
|
2001
|
11,62
|
2002
|
12,00
|
2003
|
12,42
|
2004
|
13,62
|
2005
|
14,69
|
2006
|
15,15
|
2007
|
17,96
|
2008
|
19,69
|
2009
|
21,42
|
2010
|
21,53
|
2011
|
22,15
|
2012
|
22,89
|
2013
|
22,70
|
2014
|
23,51
|
2015
|
23,93
|
2016
|
23,04
|
2017
|
26,22
|
2018
|
23,28
|
2019
|
22,93
|
2020
|
23,59
|
2021
|
25,68
|
2022
|
25,56
|
2023
|
26,72
|
|
|
|