| 1919 | 17221 |
| 1920 | 19482 |
| 1921 | 19933-23781 |
| 1922 | 29942 |
| 1923 | 34838 |
| 1924 | 40644 |
| 1925 | 48489-54853 |
| 1926 | 62852-72051 |
| 1927 | 79204 |
| 1928 | 86687 |
| 1929 | 92536 |
| 1930 | 98324 |
| 1931 | 101622 |
| 1932 | 105096 |
| 1933 | 106546 |
| 1934 | 108301 |
| 1935 | 111253 |
| 1936 | 116551 |
| 1937 | 118038 |
| 1938 | 126998 |
| 1939 | 132070 |
| 1940 | 136040 |
| 1941 | 140199 |
| 1942 | 144455 |
| 1943-44 | 145322 |
| 1945 | 145352 |
| 1946 | 154289 |
| 1947 | 161520 |
| 1948 | 165326 |
| 1949 | 170395 |
| 1950 | 172215 |
| 1951 | 175140 |
| 1952 | 179317 |
| 1953 | 183125 |
| 1954 | 187614 |
| 1955 | 193747 |
| 1956 | 194213 |
| 1957 | 201809 |
| 1958 | 203917 |
| 1959 | 205377 |
| 1960 | 209089 |
| 1961 | 211675 |
| 1962 | 213999 |
| 1963 | 218855 |
| 1964 | 700000 |
Source: Rob Stewart