Tabella dei dati
| 1982 | 24,5% | 1997 | 10,8% | 2012 | 27,4% |
| 1983 | 24,6% | 1998 | 11,5% | 2013 | 27,3% |
| 1984 | 23,5% | 1999 | 12,6% | 2014 | 27,7% |
| 1985 | 23,4% | 2000 | 13,3% | 2015 | 28,5% |
| 1986 | 22% | 2001 | 14,6% | 2016 | 28,4% |
| 1987 | 19,7% | 2002 | 15,4% | 2017 | 28,7% |
| 1988 | 17,2% | 2003 | 15,6% | 2018 | 28,4% |
| 1989 | 17,7% | 2004 | 16,1% | 2019 | 27,6% |
| 1990 | 17,5% | 2005 | 16,6% | 2020 | 25,3% |
| 1991 | 15,5% | 2006 | 16,9% | 2021 | 26% |
| 1992 | 13,4% | 2007 | 17,9% | 2022 | 25,3% |
| 1993 | 12,5% | 2008 | 22,1% | 2023 | 26% |
| 1994 | 10,7% | 2009 | 23,5% | 2024 | 25,8% |
| 1995 | 10,1% | 2010 | 24,3% | 2025 | 25% |
| 1996 | 10,3% | 2011 | 26,6% | 2026 | 24,7% |
Tabella dei dati
| 1982 | 132 mld | 1997 | 865 mld | 2012 | 15,02 mila mld |
| 1983 | 149 mld | 1998 | 988 mld | 2013 | 16,54 mila mld |
| 1984 | 171 mld | 1999 | 1,14 mila mld | 2014 | 18,24 mila mld |
| 1985 | 213 mld | 2000 | 1,34 mila mld | 2015 | 20,08 mila mld |
| 1986 | 229 mld | 2001 | 1,64 mila mld | 2016 | 21,58 mila mld |
| 1987 | 241 mld | 2002 | 1,89 mila mld | 2017 | 24,23 mila mld |
| 1988 | 262 mld | 2003 | 2,17 mila mld | 2018 | 26,55 mila mld |
| 1989 | 305 mld | 2004 | 2,64 mila mld | 2019 | 27,79 mila mld |
| 1990 | 332 mld | 2005 | 3,16 mila mld | 2020 | 26,34 mila mld |
| 1991 | 343 mld | 2006 | 3,78 mila mld | 2021 | 30,51 mila mld |
| 1992 | 367 mld | 2007 | 4,93 mila mld | 2022 | 31,23 mila mld |
| 1993 | 449 mld | 2008 | 7,16 mila mld | 2023 | 33,68 mila mld |
| 1994 | 522 mld | 2009 | 8,31 mila mld | 2024 | 34,85 mila mld |
| 1995 | 624 mld | 2010 | 10,1 mila mld | 2025 | 35,06 mila mld |
| 1996 | 741 mld | 2011 | 13,08 mila mld | 2026 | 35,98 mila mld |
Tabella dei dati
| 1982 | 24,2% | 1997 | 11,5% | 2012 | 27,7% |
| 1983 | 24,6% | 1998 | 12,6% | 2013 | 28,1% |
| 1984 | 23,4% | 1999 | 14,9% | 2014 | 28,4% |
| 1985 | 22,5% | 2000 | 16,1% | 2015 | 31% |
| 1986 | 22,3% | 2001 | 17,2% | 2016 | 31,7% |
| 1987 | 20,4% | 2002 | 18,2% | 2017 | 32% |
| 1988 | 18,2% | 2003 | 18% | 2018 | 32,6% |
| 1989 | 18,6% | 2004 | 17,6% | 2019 | 33,6% |
| 1990 | 18,2% | 2005 | 18% | 2020 | 34,8% |
| 1991 | 16,5% | 2006 | 18,1% | 2021 | 31,9% |
| 1992 | 14,6% | 2007 | 17,9% | 2022 | 32,6% |
| 1993 | 13,4% | 2008 | 22,2% | 2023 | 32,7% |
| 1994 | 12,4% | 2009 | 25,2% | 2024 | 32,9% |
| 1995 | 11,1% | 2010 | 24,7% | 2025 | 32,9% |
| 1996 | 11% | 2011 | 26,6% | 2026 | 32,8% |
Tabella dei dati
| 1982 | 131 mld | 1997 | 923 mld | 2012 | 15,18 mila mld |
| 1983 | 149 mld | 1998 | 1,08 mila mld | 2013 | 17,03 mila mld |
| 1984 | 171 mld | 1999 | 1,35 mila mld | 2014 | 18,68 mila mld |
| 1985 | 205 mld | 2000 | 1,62 mila mld | 2015 | 21,84 mila mld |
| 1986 | 232 mld | 2001 | 1,93 mila mld | 2016 | 24,11 mila mld |
| 1987 | 249 mld | 2002 | 2,24 mila mld | 2017 | 27,05 mila mld |
| 1988 | 277 mld | 2003 | 2,5 mila mld | 2018 | 30,47 mila mld |
| 1989 | 321 mld | 2004 | 2,88 mila mld | 2019 | 33,84 mila mld |
| 1990 | 345 mld | 2005 | 3,43 mila mld | 2020 | 36,31 mila mld |
| 1991 | 366 mld | 2006 | 4,03 mila mld | 2021 | 37,43 mila mld |
| 1992 | 400 mld | 2007 | 4,91 mila mld | 2022 | 40,26 mila mld |
| 1993 | 481 mld | 2008 | 7,16 mila mld | 2023 | 42,37 mila mld |
| 1994 | 604 mld | 2009 | 8,92 mila mld | 2024 | 44,44 mila mld |
| 1995 | 682 mld | 2010 | 10,25 mila mld | 2025 | 46,09 mila mld |
| 1996 | 794 mld | 2011 | 13,13 mila mld | 2026 | 47,88 mila mld |