"CensusYear","CountryName","Average"
"1921","Czechoslovakia","41"
"1933","Czechoslovakia","34"
"1947","Czechoslovakia","43"
"1954","Czechoslovakia","32"
"1961","Czechoslovakia","38"
"1971","Czechoslovakia","41"
"1976","Czechoslovakia","45"
"1981","Czechoslovakia","48"
"1986","Czechoslovakia","48"
"1991","Czechoslovakia","49"
"1996","Czech Republic","50"
"2001","Czech Republic","51"
"2006","Czech Republic","54"
"2011","Czech Republic","56"
"2016","Czech Republic","55"