"since_year","till_year","Number","Graph"
"1620","1629","1",""
"1630","1639","1",""
"1650","1659","1",""
"1660","1669","2",""
"1670","1679","5",""
"1680","1689","5",""
"1690","1699","5",""
"1700","1709","6",""
"1710","1719","1",""
"1720","1729","10","="
"1730","1739","7",""
"1740","1749","10","="
"1750","1759","7",""
"1760","1769","2",""
"1770","1779","14","="
"1780","1789","6",""
"1790","1799","10","="
"1800","1809","5",""
"1810","1819","13","="
"1820","1829","14","="
"1830","1839","22","="
"1840","1849","45","=="
"1850","1859","104","====="
"1860","1869","176","========="
"1870","1879","159","========"
"1880","1889","234","============"
"1890","1899","266","============="
"1900","1909","362","=================="
"1910","1919","349","================="
"1920","1929","426","====================="
"1930","1939","515","=========================="
"1940","1949","499","========================="
"1950","1959","552","============================"
"1960","1969","656","================================="
"1970","1979","699","==================================="
"1980","1989","691","==================================="
"1990","1999","445","======================"
"2000","2009","102","====="
"2010","2019","55","==="
"2020","2029","1",""