"since_year","till_year","Number","Graph"
"1660","1669","1",""
"1680","1689","2",""
"1690","1699","1",""
"1700","1709","3",""
"1710","1719","1",""
"1720","1729","2",""
"1730","1739","1",""
"1740","1749","4",""
"1750","1759","2",""
"1760","1769","5",""
"1770","1779","6",""
"1780","1789","6",""
"1790","1799","3",""
"1800","1809","3",""
"1810","1819","3",""
"1820","1829","2",""
"1830","1839","7",""
"1840","1849","6",""
"1850","1859","13","="
"1860","1869","12","="
"1870","1879","13","="
"1880","1889","8",""
"1890","1899","11","="
"1900","1909","9",""
"1910","1919","11","="
"1920","1929","7",""
"1930","1939","6",""
"1940","1949","6",""
"1950","1959","5",""
"1960","1969","4",""
"1970","1979","9",""
"1980","1989","7",""
"1990","1999","4",""
"2000","2009","6",""
"2010","2019","4",""
"2020","2029","1",""