number  previous number (s) previous class  converted  withdrawn         disposal
0   31 (1st)                68383            j66       1952       1959  scrapped (1959)
1   32 (1st)                68370            j66       1952       1962  scrapped (1962)
2         33                68129             y4       1952       1963  scrapped (1964)
3         34                68088             y7       1952       1952        preserved
4         35                68668            j92       1952       1952  scrapped (1952)
5         36                68378            j66       1952       1959  scrapped (1959)
6         37                68130             y1       1953       1956  scrapped (1956)
7         38                68168             y3       1953       1959  scrapped (1959)
8         39                68131             y1       1953       1963  scrapped (1963)
9         40                68173             y3       1953       1964  scrapped (1964)
10        41                68177             y3       1953       1963  scrapped (1963)
11        42                68178             y3       1953       1960  scrapped (1960)
12        43                68532            j69       1959       1959  scrapped (1959)
13        44                68498            j69       1959       1962  scrapped (1962)
14        45                68543            j69       1959       1962  scrapped (1962)

Table as JSON:
{"number":{"0":"31 (1st)","1":"32 (1st)","2":"33","3":"34","4":"35","5":"36","6":"37","7":"38","8":"39","9":"40","10":"41","11":"42","12":"43","13":"44","14":"45"},"previous number (s)":{"0":68383,"1":68370,"2":68129,"3":68088,"4":68668,"5":68378,"6":68130,"7":68168,"8":68131,"9":68173,"10":68177,"11":68178,"12":68532,"13":68498,"14":68543},"previous class":{"0":"j66","1":"j66","2":"y4","3":"y7","4":"j92","5":"j66","6":"y1","7":"y3","8":"y1","9":"y3","10":"y3","11":"y3","12":"j69","13":"j69","14":"j69"},"converted":{"0":1952,"1":1952,"2":1952,"3":1952,"4":1952,"5":1952,"6":1953,"7":1953,"8":1953,"9":1953,"10":1953,"11":1953,"12":1959,"13":1959,"14":1959},"withdrawn":{"0":1959,"1":1962,"2":1963,"3":1952,"4":1952,"5":1959,"6":1956,"7":1959,"8":1963,"9":1964,"10":1963,"11":1960,"12":1959,"13":1962,"14":1962},"disposal":{"0":"scrapped (1959)","1":"scrapped (1962)","2":"scrapped (1964)","3":"preserved","4":"scrapped (1952)","5":"scrapped (1959)","6":"scrapped (1956)","7":"scrapped (1959)","8":"scrapped (1963)","9":"scrapped (1964)","10":"scrapped (1963)","11":"scrapped (1960)","12":"scrapped (1959)","13":"scrapped (1962)","14":"scrapped (1962)"}}