"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","7","*"
"1820","1829","10","*"
"1830","1839","18","**"
"1840","1849","11","*"
"1850","1859","20","**"
"1860","1869","20","**"
"1870","1879","30","***"
"1880","1889","45","*****"
"1890","1899","31","***"
"1900","1909","40","****"
"1910","1919","45","*****"
"1920","1929","59","******"
"1930","1939","67","*******"
"1940","1949","65","*******"
"1950","1959","69","*******"
"1960","1969","75","********"
"1970","1979","52","*****"
"1980","1989","69","*******"
"1990","1999","52","*****"
"2000","2009","69","*******"
"2010","2019","40","****"
"2020","2029","16","**"