1995 1996 1997 1998 1999 2000 2001ENERO 27.0 27.8 27.7 32.3 27.1 27.8 28.7FEBR 29.0 28.9 29.6 32.2 29.2 29.1 30.1MARZO 27.6 28.0 30.6 31.4 29.4 28.6 29.8ABRIL 26.2 25.8 29.0 29.6 26.9 27.7 27.5MAYO 24.1 24.1 29.7 28.3 24.8 25.1 24.1JUNIO 24.0 21.9 29.1 26.4 23.3 23.0 21.5JULIO 23.1 21.3 28.3. 24.6 22.4 22.0 22.2AGOST 22.8 21.9 28.0 23.6 22.8 23.3 22.0SETB 22.9 22.2 28.7 24.0 22.9 23.6 22.2OCTB 23.5 23.2 28.0 24.7 23.7 24.3 22.9

25.1 23.9 29.0 25.1 25.0 24.7 24.5DICB 26.0 25.6 30.7 26.5 26.5 26.9 25.9 NOVB

2002 2003 200427.5 28.8 21.929.6 29.7 30.831.1 29.0 30.829.4 26.7 28.527.9 24.5 24.724.8 23.6 22.623.1 23.2 22.423.0 22.6 22.523.2 22.4 23.524.7 23.8 24.525.5 24.5 25.027.5 27.0 27.0