1960 1597.4 2501.8
 1961 1630.3 2560
 1962 1711.1 2715.2
 1963 1781.6 2834
 1964 1888.4 2998.6
 1965 2007.7 3191.1
 1966 2121.8 3399.1
 1967 2185 3484.6
 1968 2310.5 3652.7
 1969 2396.4 3765.4
 1970 2451.9 3771.9
 1971 2545.5 3898.6
 1972 2701.3 4105
 1973 2833.8 4341.5
 1974 2812.3 4319.6
 1975 2876.9 4311.2
 1976 3035.5 4540.9
 1977 3164.1 4750.5
 1978 3303.1 5015
 1979 3383.4 5173.4
 1980 3374.1 5161.7
 1981 3422.2 5291.7
 1982 3470.3 5189.3
 1983 3668.6 5423.8
 1984 3863.3 5813.6
 1985 4064 6053.7
 1986 4228.9 6263.6
 1987 4369.8 6475.1
 1988 4546.9 6742.7
 1989 4675 6981.4
 1990 4770.3 7112.5
 1991 4778.4 7100.5
 1992 4934.8 7336.6
 1993 5099.8 7532.7
 1994 5290.7 7835.5
 1995 5433.5 8031.7
 1996 5619.4 8328.9
 1997 5831.8 8703.5
 1998 6125.8 9066.9
 1999 6438.6 9470.3
 2000 6739.4 9817
 2001 6910.4 9890.7
 2002 7099.3 10048.8
 2003 7295.3 10301
 2004 7577.1 10703.5
 2005 7841.2 11048.6