Year	Thousand Miles
1913	1562.00
1914	1609.00
1915	1611.00
1916	1627.00
1917	1627.00
1918	1383.00
1919	1434.00
1920	1450.00
1921	1521.00
1922	1534.00
1923	1557.00
1924	1594.00
1925	1635.00
1926	1668.00
1927	1783.00
1928	1890.00
1929	1934.00
1930	1949.00
1931	1913.00
1932	1899.00
1933	1902.00
1934	1903.00
1935	1906.00
1936	1909.00
1937	1913.00
1938	1914.00
1939	1913.00
1940	1915.00
1941	1929.00
1942	1941.00