1980 1                           2725.3 
 1980 2                           2729.3 
 1980 3                           2786.6 
 1980 4                           2916.9 
 1981 1                           3052.7 
 1981 2                           3085.9 
 1981 3                           3178.7 
 1981 4                           3196.4 
 1982 1                           3186.8 
 1982 2                           3242.7 
 1982 3                           3276.2 
 1982 4                           3314.4 
 1983 1                           3382.9 
 1983 2                           3484.1 
 1983 3                           3589.3 
 1983 4                           3690.4 
 1984 1                           3809.6 
 1984 2                           3908.6 
 1984 3                           3978.2 
 1984 4                           4036.3 
 1985 1                           4119.5 
 1985 2                           4178.4 
 1985 3                           4261.3 
 1985 4                           4321.8 
 1986 1                           4385.6 
 1986 2                           4425.7 
 1986 3                           4493.9 
 1986 4                           4546.1 
 1987 1                           4613.8 
 1987 2                           4690.0 
 1987 3                           4767.8 
 1987 4                           4886.3 
 1988 1                           4951.9 
 1988 2                           5062.8 
 1988 3                           5146.6 
 1988 4                           5253.7 
 1989 1                           5367.1 
 1989 2                           5454.1 
 1989 3                           5531.9 
 1989 4                           5584.3 
 1990 1                           5716.4 
 1990 2                           5797.7 
 1990 3                           5849.4 
 1990 4                           5848.8 
 1991 1                           5888.0 
 1991 2                           5964.3 
 1991 3                           6035.6 
 1991 4                           6095.8 
 1992 1                           6196.1 
 1992 2                           6290.1 
 1992 3                           6380.5 
 1992 4                           6484.3 
 1993 1                           6542.7 
 1993 2                           6612.1 
 1993 3                           6674.6 
 1993 4                           6800.2 
 1994 1                           6911.0 
 1994 2                           7030.6 
 1994 3                           7115.1 
 1994 4                           7232.2 
 1995 1                           7298.3 
 1995 2                           7337.7 
 1995 3                           7432.1 
 1995 4                           7522.5 
 1996 1                           7624.1 
 1996 2                           7776.6 
 1996 3                           7866.2 
 1996 4                           8000.4 
 1997 1                           8113.8 
 1997 2                           8250.4 
 1997 3                           8381.9 
 1997 4                           8471.2 
 1998 1                           8586.7 
 1998 2                           8657.9 
 1998 3                           8789.5 
 1998 4                           8953.8 
 1999 1                           9066.6 
 1999 2                           9174.1 
 1999 3                           9313.5 
 1999 4                           9519.5 
 2000 1                           9629.4 
 2000 2                           9822.8 
 2000 3                           9862.1 
 2000 4                           9953.6 
 2001 1                          10021.5 
 2001 2                          10128.9 
 2001 3                          10135.1 
 2001 4                          10226.3 
 2002 1                          10333.3 
 2002 2                          10426.6 
 2002 3                          10527.4 
 2002 4                          10591.1 
 2003 1                          10705.6 
 2003 2                          10831.8 
 2003 3                          11086.1 
 2003 4                          11219.5 
 2004 1                          11405.5 
 2004 2                          11610.3 
 2004 3                          11779.4 
 2004 4                          11948.5 
 2005 1                          12155.4 
 2005 2                          12297.5 
 2005 3                          12538.2 
 2005 4                          12696.4 
 2006 1                          12959.6 
 2006 2                          13134.1 
 2006 3                          13249.6 
 2006 4                          13370.1 
 2007 1                          13510.9 
 2007 2                          13737.5 
 2007 3                          13950.6 
 2007 4                          14031.2 
 2008 1                          14150.8 
 2008 2                          14294.5 
 2008 3                          14429.2