Año | Dato |
1985
|
8,29
|
1986
|
9,22
|
1987
|
9,46
|
1988
|
9,46
|
1989
|
9,46
|
1990
|
9,46
|
1991
|
11,09
|
1992
|
11,55
|
1993
|
11,40
|
1994
|
11,01
|
1995
|
11,09
|
1996
|
12,64
|
1998
|
12,33
|
1999
|
12,25
|
2000
|
13,88
|
2001
|
14,57
|
2002
|
14,96
|
2003
|
16,90
|
2004
|
17,13
|
2005
|
16,98
|
2006
|
17,75
|
2007
|
20,39
|
2008
|
20,62
|
2009
|
21,63
|
2010
|
21,32
|
2011
|
21,63
|
2012
|
22,32
|
2013
|
21,78
|
2014
|
21,55
|
2015
|
19,86
|
2016
|
20,02
|
2017
|
19,02
|
2018
|
18,94
|
2019
|
19,94
|
2020
|
20,71
|
2021
|
22,62
|
2022
|
22,85
|
2023
|
23,39
|
|
|
|