Año | Dato |
1985
|
20,57
|
1986
|
23,19
|
1987
|
24,11
|
1988
|
25,46
|
1989
|
25,60
|
1990
|
25,96
|
1991
|
26,03
|
1992
|
26,52
|
1993
|
26,31
|
1994
|
26,31
|
1995
|
27,45
|
1996
|
29,08
|
1998
|
30,64
|
1999
|
31,77
|
2000
|
32,13
|
2001
|
33,55
|
2002
|
36,45
|
2003
|
38,30
|
2004
|
41,28
|
2005
|
44,75
|
2006
|
45,96
|
2007
|
49,43
|
2008
|
52,06
|
2009
|
52,84
|
2010
|
53,76
|
2011
|
53,33
|
2012
|
54,34
|
2013
|
53,76
|
2014
|
52,97
|
2015
|
53,04
|
2016
|
52,03
|
2017
|
51,52
|
2018
|
51,52
|
2019
|
54,70
|
2020
|
56,80
|
2021
|
60,85
|
2022
|
63,24
|
2023
|
67,80
|
|
|
|