Year	% of total taxes
1973	16.12253703437365
1974	11.305022299786698
1975	11.214262241209333
1976	14.913439477160537
1977	16.104210845198423
1978	14.008451257861635
1979	14.050035500981497
1980	16.802610114192497
1981	18.755975778179117
1982	20.280298790724835
1983	18.826584261464838
1984	15.538320676469002
1985	15.667783217383835
1986	13.924671465458793
1988	13.086097777577931
1989	12.88228437123876
1997	26.227510850701456
1998	28.574838655212666
1999	27.24100225670614
2000	28.063862637818122