Tabella dei dati
| 1960 | 527 mln | 1982 | 2,98 mld | 2004 | 5,51 mld |
| 1961 | 565 mln | 1983 | 2,63 mld | 2005 | 5,52 mld |
| 1962 | 636 mln | 1984 | 2,67 mld | 2006 | 5,58 mld |
| 1963 | 698 mln | 1985 | 2,8 mld | 2007 | 6,39 mld |
| 1964 | 759 mln | 1986 | 3,58 mld | 2008 | 6,02 mld |
| 1965 | 845 mln | 1987 | 4,47 mld | 2009 | 5,06 mld |
| 1966 | 907 mln | 1988 | 4,92 mld | 2010 | 5,89 mld |
| 1967 | 922 mln | 1989 | 5,03 mld | 2011 | 6,32 mld |
| 1968 | 941 mln | 1990 | 6,17 mld | 2012 | 6,24 mld |
| 1969 | 1,02 mld | 1991 | 6,22 mld | 2013 | 6,53 mld |
| 1970 | 1,12 mld | 1992 | 6,42 mld | 2014 | 6,56 mld |
| 1971 | 1,24 mld | 1993 | 5,01 mld | 2015 | 5,39 mld |
| 1972 | 1,46 mld | 1994 | 5,15 mld | 2016 | 5,43 mld |
| 1973 | 1,7 mld | 1995 | 5,73 mld | 2017 | 5,54 mld |
| 1974 | 1,86 mld | 1996 | 6,2 mld | 2018 | 5,73 mld |
| 1975 | 2,23 mld | 1997 | 5,2 mld | 2019 | 5,84 mld |
| 1976 | 2,35 mld | 1998 | 5,13 mld | 2020 | 6,27 mld |
| 1977 | 2,56 mld | 1999 | 5,15 mld | 2021 | 7,58 mld |
| 1978 | 2,87 mld | 2000 | 4,79 mld | 2022 | 7,72 mld |
| 1979 | 3,37 mld | 2001 | 4,13 mld | 2023 | 8,79 mld |
| 1980 | 3,79 mld | 2002 | 4,35 mld | 2024 | 12 mld |
| 1981 | 3,49 mld | 2003 | 5,31 mld | 2025 | 16,5 mld |
Tabella dei dati
| 1960 | 3,8% | 1982 | 2,9% | 2004 | 1,4% |
| 1961 | 3,7% | 1983 | 2,7% | 2005 | 1,4% |
| 1962 | 3,9% | 1984 | 2,7% | 2006 | 1,3% |
| 1963 | 4% | 1985 | 2,7% | 2007 | 1,3% |
| 1964 | 3,9% | 1986 | 2,6% | 2008 | 1,2% |
| 1965 | 3,9% | 1987 | 2,7% | 2009 | 1,2% |
| 1966 | 3,9% | 1988 | 2,6% | 2010 | 1,2% |
| 1967 | 3,6% | 1989 | 2,5% | 2011 | 1,1% |
| 1968 | 3,5% | 1990 | 2,6% | 2012 | 1,1% |
| 1969 | 3,5% | 1991 | 2,5% | 2013 | 1,1% |
| 1970 | 3,4% | 1992 | 2,4% | 2014 | 1,1% |
| 1971 | 3,4% | 1993 | 2,4% | 2015 | 1,1% |
| 1972 | 3,4% | 1994 | 2,3% | 2016 | 1,1% |
| 1973 | 3,3% | 1995 | 2,1% | 2017 | 1% |
| 1974 | 3,2% | 1996 | 2,1% | 2018 | 1% |
| 1975 | 3,1% | 1997 | 1,9% | 2019 | 1,1% |
| 1976 | 3% | 1998 | 1,9% | 2020 | 1,2% |
| 1977 | 3,1% | 1999 | 1,9% | 2021 | 1,2% |
| 1978 | 3,1% | 2000 | 1,8% | 2022 | 1,3% |
| 1979 | 3,1% | 2001 | 1,7% | 2023 | 1,5% |
| 1980 | 2,9% | 2002 | 1,6% | 2024 | 2% |
| 1981 | 2,9% | 2003 | 1,6% | 2025 | 2,5% |