{"year":"1971","percentage":2.27273}
{"year":"1975","percentage":0}
{"year":"1979","percentage":6.52174}
{"year":"1983","percentage":6.52174}
{"year":"1987","percentage":10.86957}
{"year":"1991","percentage":8.69565}
{"year":"1995","percentage":17.3913}
{"year":"1999","percentage":19.56522}
{"year":"2003","percentage":23.91304}
{"year":"2007","percentage":21.73913}
{"year":"2011","percentage":19.56522}
{"year":"2015","percentage":15.2}
{"year":"2019","percentage":26.1}