1790    7.0
1803    9.0
1808   12.0
1829   24.0
1830   26.0
1838   33.5
1893   82.0
1903  130.6
1906  127.7
1907  150.0
1910  131.5
1927  241.4
1935  301.1
1939  369.7
1963  408.3
1965  600.6