{"year":1968,"peak":83.4}
{"year":1969,"peak":170}
{"year":1970,"peak":47.2}
{"year":1971,"peak":80.7}
{"year":1972,"peak":167}
{"year":1973,"peak":28.3}
{"year":1974,"peak":61.7}
{"year":1975,"peak":300}
{"year":1976,"peak":142}
{"year":1977,"peak":72.8}
{"year":1978,"peak":66.5}
{"year":1979,"peak":694}
{"year":1980,"peak":34.9}
{"year":1981,"peak":211}
{"year":1982,"peak":91.2}
{"year":1983,"peak":200}
{"year":1984,"peak":8.65}
{"year":1985,"peak":115}
{"year":1986,"peak":169}
{"year":1987,"peak":65.9}
{"year":1988,"peak":60.7}
{"year":1989,"peak":49.8}
{"year":1990,"peak":94.5}
{"year":1991,"peak":222}
{"year":1992,"peak":89.4}
{"year":1993,"peak":120}
{"year":1994,"peak":103}
{"year":1995,"peak":232}
{"year":1996,"peak":197}
{"year":1997,"peak":42.3}