{"year":1900,"time":1,"value":22.2}
{"year":1904,"time":2,"value":21.6}
{"year":1932,"time":8,"value":21.2}
{"year":1936,"time":9,"value":20.7}
{"year":1956,"time":12,"value":20.6}
{"year":1960,"time":13,"value":20.5}
{"year":1964,"time":14,"value":20.3}
{"year":1968,"time":15,"value":19.83}
{"year":1984,"time":19,"value":19.8}
{"year":1988,"time":20,"value":19.75}
{"year":1996,"time":22,"value":19.32}
{"year":2008,"time":25,"value":19.3}