"time"	"airmiles"
1937	412
1938	480
1939	683
1940	1052
1941	1385
1942	1418
1943	1634
1944	2178
1945	3362
1946	5948
1947	6109
1948	5981
1949	6753
1950	8003
1951	10566
1952	12528
1953	14760
1954	16769
1955	19819
1956	22362
1957	25340
1958	25343
1959	29269
1960	30514