Tabella dei dati
| 1990 | 32,8% | 2003 | 56,2% | 2016 | 40,3% |
| 1991 | 34,6% | 2004 | 57,1% | 2017 | 41,1% |
| 1992 | 38,9% | 2005 | 54,1% | 2018 | 39% |
| 1993 | 43,7% | 2006 | 47,8% | 2019 | 38,8% |
| 1994 | 46,4% | 2007 | 44% | 2020 | 42,4% |
| 1995 | 49,3% | 2008 | 44,2% | 2021 | 39,7% |
| 1996 | 50,6% | 2009 | 42,4% | 2022 | 35,9% |
| 1997 | 52,9% | 2010 | 40,7% | 2023 | 37,3% |
| 1998 | 55,3% | 2011 | 41,2% | 2024 | 40,5% |
| 1999 | 52% | 2012 | 41,9% | 2025 | 39,4% |
| 2000 | 51,7% | 2013 | 41,2% | 2026 | 38,5% |
| 2001 | 50,5% | 2014 | 41,2% | | |
| 2002 | 56,9% | 2015 | 41,4% | | |
Tabella dei dati
| 1990 | 123 mld | 2003 | 277 mld | 2016 | 277 mld |
| 1991 | 135 mld | 2004 | 290 mld | 2017 | 286 mld |
| 1992 | 155 mld | 2005 | 286 mld | 2018 | 282 mld |
| 1993 | 178 mld | 2006 | 269 mld | 2019 | 284 mld |
| 1994 | 194 mld | 2007 | 264 mld | 2020 | 301 mld |
| 1995 | 209 mld | 2008 | 275 mld | 2021 | 305 mld |
| 1996 | 216 mld | 2009 | 260 mld | 2022 | 294 mld |
| 1997 | 230 mld | 2010 | 259 mld | 2023 | 311 mld |
| 1998 | 246 mld | 2011 | 266 mld | 2024 | 346 mld |
| 1999 | 236 mld | 2012 | 274 mld | 2025 | 342 mld |
| 2000 | 246 mld | 2013 | 275 mld | 2026 | 340 mld |
| 2001 | 247 mld | 2014 | 280 mld | | |
| 2002 | 278 mld | 2015 | 282 mld | | |
Tabella dei dati
| 1990 | 12,9% | 2003 | 38,3% | 2016 | 21,3% |
| 1991 | 14% | 2004 | 44% | 2017 | 20,4% |
| 1992 | 17,5% | 2005 | 41% | 2018 | 18,4% |
| 1993 | 20,1% | 2006 | 35,9% | 2019 | 16,9% |
| 1994 | 22,6% | 2007 | 28,9% | 2020 | 20% |
| 1995 | 24,5% | 2008 | 24,5% | 2021 | 19,5% |
| 1996 | 26,5% | 2009 | 22,9% | 2022 | 15,7% |
| 1997 | 28,4% | 2010 | 21,5% | 2023 | 17% |
| 1998 | 29,5% | 2011 | 21,7% | 2024 | 20,3% |
| 1999 | 33,3% | 2012 | 21,3% | 2025 | 19,2% |
| 2000 | 33,5% | 2013 | 20,3% | 2026 | 18,3% |
| 2001 | 34,3% | 2014 | 20,4% | | |
| 2002 | 38,1% | 2015 | 20,6% | | |
Tabella dei dati
| 1990 | 48,2 mld | 2003 | 189 mld | 2016 | 147 mld |
| 1991 | 54,7 mld | 2004 | 224 mld | 2017 | 142 mld |
| 1992 | 69,8 mld | 2005 | 217 mld | 2018 | 133 mld |
| 1993 | 82,2 mld | 2006 | 202 mld | 2019 | 124 mld |
| 1994 | 94,6 mld | 2007 | 173 mld | 2020 | 142 mld |
| 1995 | 104 mld | 2008 | 153 mld | 2021 | 150 mld |
| 1996 | 113 mld | 2009 | 141 mld | 2022 | 128 mld |
| 1997 | 123 mld | 2010 | 137 mld | 2023 | 142 mld |
| 1998 | 131 mld | 2011 | 140 mld | 2024 | 173 mld |
| 1999 | 151 mld | 2012 | 139 mld | 2025 | 166 mld |
| 2000 | 160 mld | 2013 | 135 mld | 2026 | 161 mld |
| 2001 | 168 mld | 2014 | 138 mld | | |
| 2002 | 186 mld | 2015 | 140 mld | | |