Quantity. Value. Quantity. Value. Quantity. Value. Quantity Value.
oz. £ oz. £ Tons. £ Tons. £
1897 34,553 136,834 1,809,805 208,200 19,722 869,266 746 10,343
1901 82,517 330,076 1,824,842 211,682 26,495 1,625,244 1,744 24,640
1906 90,842 363,715 2,623,212 243,914 37,254 3,007,992 2,721 49,690