Statistics - Decades Filter by Country Built: All australia belgium canada denmark france germany hong kong india ireland italy japan netherlands new zealand norway singapore spain sweden united kingdom united states unknown Decade Count 1790 1 1800 21 1810 23 1820 29 1830 62 1840 63 1850 145 1860 225 1870 237 1880 175 1890 165 1900 91 1910 87 1920 75 1930 130 1940 108 1950 20 1960 16 1970 29 1980 16 1990 3

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