Año | Dato |
1985
|
13,35
|
1986
|
13,61
|
1987
|
13,92
|
1988
|
14,16
|
1989
|
14,92
|
1990
|
15,87
|
1991
|
18,25
|
1992
|
19,02
|
1993
|
20,18
|
1994
|
21,46
|
1995
|
22,94
|
1996
|
24,08
|
1998
|
26,23
|
1999
|
26,93
|
2000
|
29,92
|
2001
|
33,43
|
2002
|
36,51
|
2003
|
40,36
|
2004
|
44,49
|
2005
|
47,82
|
2006
|
49,66
|
2007
|
51,50
|
2008
|
54,00
|
2009
|
56,42
|
2010
|
58,29
|
2011
|
60,49
|
2012
|
62,20
|
2013
|
63,01
|
2014
|
64,02
|
2015
|
65,02
|
2016
|
65,63
|
2017
|
66,51
|
2018
|
67,27
|
2019
|
69,17
|
2020
|
69,92
|
2021
|
72,17
|
2022
|
72,61
|
2023
|
73,52
|
|
|
|