| 年份 | 意大利 |
|---|---|
| 2023 | - |
| 2022 | 3.38512 |
| 2021 | 3.4597 |
| 2020 | 3.55089 |
| 2019 | 3.65228 |
| 2018 | 3.75846 |
| 2017 | 3.86689 |
| 2016 | 3.97136 |
| 2015 | 4.07459 |
| 2014 | 4.17762 |
| 2013 | 4.27134 |
| 2012 | 4.3357 |
| 2011 | 4.38566 |
| 2010 | 4.43004 |
| 2009 | 4.45561 |
| 2008 | 4.46079 |
| 2007 | 4.45368 |
| 2006 | 4.44246 |
| 2005 | 4.42764 |
| 2004 | 4.4059 |
| 2003 | 4.37739 |
| 2002 | 4.34506 |
| 2001 | 4.33376 |
| 2000 | 4.34198 |
| 1999 | 4.34438 |
| 1998 | 4.36932 |
| 1997 | 4.42666 |
| 1996 | 4.46373 |
| 1995 | 4.47511 |
| 1994 | 4.48469 |
| 1993 | 4.47117 |
| 1992 | 4.40904 |
| 1991 | 4.49716 |
| 1990 | 4.6501 |
| 1989 | 4.69469 |
| 1988 | 4.75417 |
| 1987 | 4.84865 |
| 1986 | 4.96948 |
| 1985 | 5.07024 |
| 1984 | 5.17604 |
| 1983 | 5.31785 |
| 1982 | 5.4827 |
| 1981 | 5.7164 |
| 1980 | 6.015 |
| 1979 | 6.33742 |
| 1978 | 6.65915 |
| 1977 | 6.94265 |
| 1976 | 7.18884 |
| 1975 | 7.3696 |
| 1974 | 7.4933 |
| 1973 | 7.60096 |
| 1972 | 7.70705 |
| 1971 | 7.86398 |
| 1970 | 8.08004 |
| 1969 | 8.28409 |
| 1968 | 8.43311 |
| 1967 | 8.5088 |
| 1966 | 8.50163 |
| 1965 | 8.43535 |
| 1964 | 8.30422 |
| 1963 | 8.14598 |
| 1962 | 8.02295 |
| 1961 | 7.96017 |
| 1960 | 7.95365 |