"since_year","till_year","Total","Graphic"
"1000","1099","1",""
"1400","1499","1",""
"1500","1599","15",""
"1600","1699","48",""
"1700","1799","75","="
"1800","1899","264","==="
"1900","1999","72","="
"2000","2099","3",""