1750
450
400
500
1755
450
400
500
1760
450
400
500
1765
450
400
500
1770
450
400
500
1775
450
400
500
1780
450
400
500
1785
450
400
500
1790
450
400
500
1795
450
400
500
1800
450
400
500
1805
450
400
500
1810
450
400
500
1815
450
400
500
1820
450
400
500
1825
450
400
500
1830
450
400
500
1835
450
400
500
1840
450
400
500
1845
450
400
500
1850
450
400
500
1855
450
400
500
1860
450
400
500
1865
450
400
500
1870
450
400
500
1875
450
400
500
1880
450
400
500
1885
450
400
500
1890
450
400
500
1895
450
400
500
1900
450
400
500
1905
450
400
500
1910
450
400
500
1915
450
400
500
1920
450
400
500
1925
450
400
500
1930
450
400
500
1935
450
400
500
1940
450
400
500
1945
450
400
500
1950
450
400
500
1955
450
400
500
1960
450
400
500
1965
450
400
500
1970
307.95
450
400
500
1975
319.54
450
400
500
1978
328.31
450
400
500
1979
331.83
450
400
500
1980
335.64
450
400
500
1981
338.16
450
400
500
1982
341.23
450
400
500
1983
344.23
450
400
500
1984
347.32
450
400
500
1985
350.26
450
400
500
1986
353.39
450
400
500
1987
356.41
450
400
500
1988
360.71
450
400
500
1989
363.98
450
400
500
1990
366.41
450
400
500
1991
369.15
450
400
500
1992
370.57
450
400
500
1993
371.86
450
400
500
1994
374.17
450
400
500
1995
376.88
450
400
500
1996
379.29
450
400
500
1997
381.0
450
400
500
1998
384.29
450
400
500
1999
387.22
450
400
500
2000
388.9
450
400
500
2001
390.95
450
400
500
2002
393.4
450
400
500
2003
396.61
450
400
500
2004
398.54
450
400
500
2005
401.42
450
400
500
2006
404.04
450
400
500
2007
406.32
450
400
500
2008
409.15
450
400
500
2009
411.05
450
400
500
2010
413.9
450
400
500
2011
416.39
450
400
500