# anno, prezzo nominale, prezzo reale del 1970, prezzo reale del 2007

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1970, 1.7, 1.7, 9.7
1975, 11.4, 6.0, 43.0
1980, 32.9, 11.0, 79.1
1985, 27.5, 10.4, 48.2
1990, 22.2, 5.1, 32.3
1991, 19.3, 5.0, 27.0
1992, 18.5, 4.7, 25.0
1993, 16.4, 4.4, 21.5
1994, 15.7, 4.1, 20.1
1995, 17.2, 4.1, 21.6
1996, 20.5, 5.0, 25.2
1997, 19.1, 5.0, 23.0
1998, 12.5, 3.4, 14.8
1999, 17.3, 4.8, 20.2
2000, 28.0, 8.2, 32.0
2001, 23.6, 7.1, 26.5
2002, 24.2, 7.2, 26.7
2003, 28.3, 7.6, 30.7
2004, 36.4, 9.0, 38.6
2005, 50.7, 12.1, 52.8
2006, 61.8, 14.1, 62.9
2007, 69.4, 14.6, 69.4