"Year_From","Year_Till","Number","Grafic"
"1200","1299","7",""
"1300","1399","9",""
"1400","1499","42",""
"1500","1599","68","="
"1600","1699","261","==="
"1700","1799","830","========"
"1800","1899","2178","======================"
"1900","1999","2428","========================"
"2000","2099","159","=="