January | 2000 | 8.2 |
February | 1998 | 10.4 |
March | 1997 | 11.5 |
April | 1997 | 13.6 |
May | 2001 | 16.8 |
June | 2003 | 19.5 |
July | 1999, 2003 | 21.0 |
August | 2003 | 21.9 |
September | 1999 | 18.2 |
October | 2001 | 14.7 |
November | 2003 | 10.8 |
December | 1998 | 7.0 |
January | 1999 | 4.8 |
February | 2001 | 6.4 |
March | 2001 | 7.4 |
April | 1998 | 10.2 |
May | 1997 | 13.9 |
June | 1998 | 15.2 |
July | 1998 | 16.9 |
August | 1998 | 18.2 |
September | 1997 | 15.3 |
October | 1998 | 10.8 |
November | 1996 | 6.5 |
December | 1996 | 4.7 |
January | 2000 | 2.3 |
February | 1998 | 5.2 |
March | 2000 | 4.1 |
April | 1997, 1999 | 5.1 |
May | 1998 | 7.9 |
June | 2003 | 10.5 |
July | 2003 | 12.8 |
August | 1997 | 13.6 |
September | 1998 | 10.8 |
October | 2001 | 9.4 |
November | 1997 | 6.7 |
December | 1997 | 3.8 |
January | 2001 | 0.3 |
February | 2003 | 0.2 |
March | 2001 | 0.8 |
April | 2001 | 3.3 |
May | 2004 | 6.6 |
June | 2001 | 8.7 |
July | 2004 | 9.3 |
August | 1999 | 10.3 |
September | 2004 | 8.5 |
October | 2002 | 4.8 |
November | 2002 | 1.2 |
December | 1999 | 0.3 |
January | 2000 | 5.3 |
February | 1998 | 7.8 |
March | 1997 | 7.6 |
April | 2003 | 9.3 |
May | 2001 | 11.9 |
June | 2003 | 15.0 |
July | 2003 | 16.9 |
August | 1997, 2003 | 16.7 |
September | 1999 | 14.4 |
October | 2001 | 12.1 |
November | 1997 | 7.8 |
December | 1997 | 5.3 |
January | 2001 | 2.7 |
February | 2001 | 3.4 |
March | 2001 | 4.1 |
April | 1998 | 6.8 |
May | 1997 | 10.5 |
June | 1998 | 12.3 |
July | 2004 | 13.6 |
August | 1998 | 14.8 |
September | 2004 | 12.3 |
October | 2002 | 8.1 |
November | 1996 | 4.0 |
December | 1996 | 2.8 |
January | 2002 | 104.4 |
February | 2002 | 100.6 |
March | 1998 | 55.9 |
April | 1998 | 120.2 |
May | 1997 | 96.1 |
June | 1997 | 101.3 |
July | 1998 | 105.4 |
August | 2004 | 193.6 |
September | 2000 | 134.6 |
October | 2004 | 152.2 |
November | 1998 | 106.1 |
December | 1997 | 94.9 |
January | 1997 | 19.8 |
February | 2004 | 11.0 |
March | 1997 | 37.3 |
April | 1997 | 10.0 |
May | 2001 | 11.6 |
June | 2003 | 38.4 |
July | 2000 | 21.6 |
August | 2003 | 11.6 |
September | 2002 | 14.0 |
October | 2003 | 6.4 |
November | 2001 | 33.6 |
December | 2001 | 26.8 |