"since_year","till_year","Number","Graph"
"1620","1629","1",""
"1690","1699","1",""
"1710","1719","1",""
"1720","1729","1",""
"1730","1739","6","*"
"1740","1749","1",""
"1750","1759","2",""
"1770","1779","4",""
"1780","1789","1",""
"1790","1799","1",""
"1800","1809","3",""
"1810","1819","6","*"
"1820","1829","8","*"
"1830","1839","15","**"
"1840","1849","11","*"
"1850","1859","18","**"
"1860","1869","18","**"
"1870","1879","29","***"
"1880","1889","43","****"
"1890","1899","27","***"
"1900","1909","34","***"
"1910","1919","39","****"
"1920","1929","57","******"
"1930","1939","65","*******"
"1940","1949","59","******"
"1950","1959","63","******"
"1960","1969","71","*******"
"1970","1979","50","*****"
"1980","1989","69","*******"
"1990","1999","51","*****"
"2000","2009","68","*******"
"2010","2019","40","****"
"2020","2029","12","*"