"Year_From","Year_Till","Number","Grafic"
"600","699","1",""
"700","799","14",""
"800","899","43",""
"900","999","50","="
"1000","1099","41",""
"1100","1199","21",""
"1200","1299","12",""
"1300","1399","2",""
"1400","1499","2",""
"1500","1599","117","="
"1600","1699","499","====="
"1700","1799","600","======"
"1800","1899","1590","================"
"1900","1999","661","======="
"2000","2099","3",""