Año | Dato |
1985
|
4,06
|
1986
|
4,55
|
1987
|
4,55
|
1988
|
4,90
|
1989
|
4,97
|
1990
|
5,10
|
1991
|
5,17
|
1992
|
6,43
|
1993
|
6,43
|
1994
|
6,22
|
1995
|
7,55
|
1996
|
8,11
|
1998
|
6,99
|
1999
|
6,99
|
2000
|
8,25
|
2001
|
9,16
|
2002
|
10,63
|
2003
|
11,19
|
2004
|
12,03
|
2005
|
12,66
|
2006
|
12,52
|
2007
|
13,29
|
2008
|
16,36
|
2009
|
15,80
|
2010
|
14,22
|
2011
|
15,99
|
2012
|
15,52
|
2013
|
14,63
|
2014
|
12,92
|
2015
|
13,81
|
2016
|
13,53
|
2017
|
13,88
|
2018
|
13,53
|
2019
|
14,01
|
2020
|
15,17
|
2021
|
14,56
|
2022
|
15,52
|
2023
|
14,97
|
|
|
|