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{"year":1996,"Jan":56.6,"Feb":58.7,"Mar":60.4,"Apr":67.8,"May":76.9,"Jun":79.2,"Jul":82.2,"Aug":80.7,"Sep":79.1,"Oct":72.1,"Nov":65.1,"Dec":60.2,"Annual":69.9}
{"year":1997,"Jan":59.6,"Feb":64.2,"Mar":70.6,"Apr":68.4,"May":74.8,"Jun":78.8,"Jul":81.9,"Aug":81.6,"Sep":79.8,"Oct":72.2,"Nov":63.8,"Dec":59.1,"Annual":71.2}
{"year":1998,"Jan":60.6,"Feb":60,"Mar":62.1,"Apr":69.6,"May":77.3,"Jun":83.9,"Jul":83.5,"Aug":82.6,"Sep":80.3,"Oct":75.2,"Nov":69.7,"Dec":65,"Annual":72.5}
{"year":1999,"Jan":60.9,"Feb":62,"Mar":62.5,"Apr":72.6,"May":74.5,"Jun":79.2,"Jul":82.1,"Aug":83,"Sep":78.8,"Oct":73.4,"Nov":66,"Dec":59.5,"Annual":71.2}