"CensusYear","CountryName","Average"
"1891","Afghanistan","0"
"1901","Afghanistan","0"
"1911","Afghanistan","42"
"1921","Afghanistan","60"
"1947","Afghanistan","77"
"1991","Afghanistan","27"
"1996","Afghanistan","28"
"2001","Afghanistan","31"
"2006","Afghanistan","30"
"2011","Afghanistan","30"
"2016","Afghanistan","32"