Gibraltar Census Dates and Population Totals:

1753 = 1,816
1767 = 2,710
1777 = 3,201
1787 = 3,386
1791 = 2,890 
1814 = 10,136
1834 = 15,002
1844 = 15,823
1871 = 18,695
1878 = 18,014
1881 = 18,381
1891 = 19,100
1901 = 20,355
1911 = 19,120
1921 = 18,061
1931 = 17,405
1951 = 20,845
1961 = 21,636
1970 = 24,672
1981 = 26,479
1991 = 26,703
2001 = 27,495