1981   298.63 298.65 298.66 298.68 298.71 298.72 298.67 298.71 298.77 298.73 298.67 298.67 298.66 298.65 298.70
1982   298.87 298.78 298.88 298.87 298.84 298.78 298.80 298.78 298.78 298.88 298.79 298.81 298.80 298.78 298.84
1983   298.73 298.77 298.75 298.80 298.82 298.80 298.81 298.86 298.81 298.84 298.83 298.83 298.84 298.85 298.86
1984   298.54 298.55 298.63 298.58 298.63 298.60 298.64 298.65 298.65 298.63 298.62 298.58 298.58 298.58 298.59
1985   298.60 298.57 298.62 298.66 298.65 298.63 298.65 298.63 298.65 298.62 298.64 298.64 298.66 298.69 298.67
1986   298.64 298.76 298.68 298.72 298.74 298.71 298.79 298.82 298.78 298.78 298.72 298.75 298.69 298.75 298.80
1987   298.82 298.99 298.95 298.94 298.94 298.92 298.91 298.97 299.00 298.98 298.99 299.00 299.02 299.04 298.98
1988   298.72 298.70 298.75 298.75 298.76 298.64 298.73 298.73 298.69 298.70 298.71 298.77 298.80 298.72 298.73
1989   298.71 298.73 298.71 298.77 298.76 298.67 298.67 298.71 298.72 298.75 298.71 298.66 298.73 298.75 298.71
1990   298.75 298.74 298.74 298.70 298.85 298.76 298.82 298.87 298.88 298.85 298.87 298.86 298.84 298.89 298.89
1991   298.96 298.93 298.96 299.01 299.00 298.97 298.90 299.00 298.97 298.92 298.94 298.95 298.94 298.95 298.96
1992   298.78 298.81 298.79 298.87 298.84 298.79 298.86 298.78 298.82 298.85 298.75 298.75 298.76 298.82 298.77
1993   298.79 298.84 298.77 298.86 298.87 298.83 298.79 298.83 298.83 298.86 298.86 298.83 298.78 298.77 298.81
1994   298.57 298.65 298.60 298.70 298.71 298.63 298.63 298.66 298.66 298.69 298.68 298.65 298.62 298.64 298.66
1995   298.76 298.83 298.81 298.77 298.82 298.83 298.83 298.90 298.88 298.85 298.80 298.85 298.88 298.81 298.86
1996   298.65 298.63 298.61 298.70 298.67 298.61 298.62 298.63 298.65 298.69 298.67 298.64 298.74 298.75 298.70
1997   299.09 299.10 299.07 299.14 299.10 299.04 299.02 299.06 299.02 299.11 299.01 299.03 299.01 299.01 299.05
1998   298.82 298.84 298.83 298.88 298.90 298.80 298.80 298.81 298.82 298.81 298.87 298.86 298.86 298.90 298.91
1999   298.53 298.56 298.61 298.65 298.60 298.61 298.55 298.65 298.64 298.64 298.65 298.63 298.68 298.63 298.62
2000   298.51 298.55 298.61 298.63 298.63 298.66 298.69 298.64 298.63 298.69 298.67 298.71 298.75 298.73 298.76
2001   298.83 298.86 298.81 298.83 298.87 298.73 298.84 298.90 298.94 298.82 298.83 298.86 298.82 298.90 298.90
2002   298.99 298.84 298.86 298.82 298.86 299.02 298.98 299.01 299.02 299.03 299.01 299.02 299.09 298.97 299.08
2003   298.85 298.80 298.83 298.93 298.81 298.91 298.89 298.96 298.93 298.91 298.97 299.01 298.95 298.95 298.94
2004   298.88 298.87 298.84 298.84 298.82 298.87 298.82 298.86 298.88 298.78 298.82 298.90 298.89 298.87 298.91
2005   298.91 298.94 298.88 298.93 298.91 298.89 298.89 298.93 298.97 298.91 298.86 298.93 298.97 298.89 298.91
2006   298.79 298.86 298.87 298.88 298.84 298.89 298.87 298.95 298.92 298.95 298.93 298.92 298.92 298.95 298.91
2007   298.68 298.67 298.80 298.73 298.68 298.77 298.80 298.77 298.66 298.72 298.77 298.78 298.77 298.74 298.76
2008   298.81 298.78 298.76 298.79 298.82 298.83 298.84 298.80 298.86 298.86 298.83 298.80 298.80 298.83 298.81
2009   299.12 299.08 299.12 299.04 298.96 299.13 299.10 299.08 299.06 299.09 299.16 299.13 299.12 299.11 299.10
