Year, BCGTAU,
1945, 
1946, 
1947, 
1948, 
1949, 
1950, 
1951, 
1952, 
1953, 
1954, 
1955, 500.9
1956, 399.7
1957, 423
1958, 555.3
1959, 647.7
1960, 804.9
1961, 742.7
1962, 784.7
1963, 1008.5
1964, 1190.7
1965, 1122.5
1966, 1065.4
1967, 1116.6
1968, 1416.8
1969, 987.4
1970, 1097.1
1971, 1301.8
1972, 2130.5
1973, 1648.2
1974, 1233.9
1975, 1182.6
1976, 1278.5
1977, 1313.4
1978, 1579.4
1979, 1705.1
1980, 1519.2
1981, 1494.6
1982, 1584.5
1983, 1806.1
1984, 1759.1
1985, 1841.8
1986, 1883
1987, 2016.3
1988, 2210.4
1989, 2304.7
1990, 2005
1991, 1600.3
1992, 1599.1
1993, 1776.5
1994, 1906.3
1995, 1938.2
1996, 2018.4
1997, 2157
1998, 2261.6
1999, 2241.7
2000, 2337.3
2001, 2577.5
2002, 2682.2
2003, 2646.1
2004,