"Year","Annual earnings","5 year average earnings"
1978,6.4459,NA
1979,6.46391,NA
1980,6.81022,6.47495
1981,6.86203,6.71883
1982,7.35122,6.97114
1983,7.52885,7.17986
1984,7.87188,7.51251
1985,7.93089,7.98994
1986,8.33417,8.50992
1987,9.65341,8.92445
1988,10.44366,9.35305
1989,10.10323,9.65123
1990,10.34084,9.8979
1991,9.78455,9.94923
1992,10.84437,9.88262
1993,10.39812,9.92168
1994,10.04587,10.11633
1995,10.35542,10.32495
1996,10.70695,10.61133
1997,11.72976,11.10046
1998,11.91412,11.59658
1999,12.41518,11.82703
2000,12.99879,11.62596
2001,12.12799,11.51995
2002,11.38775,11.43176
2003,11.58861,NA
2004,12.38058,NA