1861 4 -1.13641
1871 19 -1.23155
1881 16 -1.17792
1891 11 -1.29712
1901 13 -1.10791
1911 8 -1.27651
1921 7 -1.10669
1931 10 -1.16953
1941 12 -1.14617
1951 12 -1.1739
1961 8 -1.1454
1971 15 -1.21595
1981 9 -1.254
1991 10 -1.22313
2001 7 -1.29848