"Year","Revenues" 1970,0 1971,0 1972,0 1973,0 1974,0 1975,0 1976,2 1977,3 1978,4 1979,5 1980,7 1981,9 1982,10 1983,12 1984,15 1985,18 1986,26 1987,38 1988,41 1989,52 1990,52 1991,103 1992,110 1993,126 1994,133 1995,147 1996,154 1997,175 1998,194 1999,213 2000,228