Tabella dei dati
| 1990 | 189,8% | 1997 | 147,6% | 2004 | 113% |
| 1991 | 182,4% | 1998 | 151,2% | 2005 | 50,7% |
| 1992 | 173,6% | 1999 | 147,7% | 2006 | 45% |
| 1993 | 171,9% | 2000 | 152,1% | 2007 | 42,7% |
| 1994 | 163% | 2001 | 144,5% | 2008 | 37,3% |
| 1995 | 152,6% | 2002 | 132,4% | 2009 | 31,2% |
| 1996 | 141,5% | 2003 | 133,4% | 2010 | 30% |
Tabella dei dati
| 1990 | 509 mld | 1997 | 1,1 mila mld | 2004 | 1,43 mila mld |
| 1991 | 568 mld | 1998 | 1,2 mila mld | 2005 | 764 mld |
| 1992 | 645 mld | 1999 | 1,21 mila mld | 2006 | 776 mld |
| 1993 | 711 mld | 2000 | 1,44 mila mld | 2007 | 862 mld |
| 1994 | 825 mld | 2001 | 1,46 mila mld | 2008 | 914 mld |
| 1995 | 872 mld | 2002 | 1,48 mila mld | 2009 | 787 mld |
| 1996 | 977 mld | 2003 | 1,43 mila mld | 2010 | 838 mld |
Tabella dei dati
| 1990 | 173,3% | 1997 | 111,6% | 2004 | 85,4% |
| 1991 | 163,2% | 1998 | 115,3% | 2005 | 31,2% |
| 1992 | 151,5% | 1999 | 107,6% | 2006 | 28,8% |
| 1993 | 148,7% | 2000 | 112,9% | 2007 | 27% |
| 1994 | 136,9% | 2001 | 105,8% | 2008 | 21,7% |
| 1995 | 123,9% | 2002 | 95,7% | 2009 | 17,9% |
| 1996 | 109,3% | 2003 | 95,1% | 2010 | 18,8% |
Tabella dei dati
| 1990 | 465 mld | 1997 | 832 mld | 2004 | 1,08 mila mld |
| 1991 | 509 mld | 1998 | 911 mld | 2005 | 471 mld |
| 1992 | 563 mld | 1999 | 882 mld | 2006 | 498 mld |
| 1993 | 615 mld | 2000 | 1,07 mila mld | 2007 | 546 mld |
| 1994 | 693 mld | 2001 | 1,07 mila mld | 2008 | 531 mld |
| 1995 | 707 mld | 2002 | 1,07 mila mld | 2009 | 452 mld |
| 1996 | 755 mld | 2003 | 1,02 mila mld | 2010 | 525 mld |