| Batting Average | |
|---|---|
| 1901 | 0.426 |
| 1903 | 0.344 |
| 1904 | 0.376 |
| 1905 | 0.308 |
| 1906 | 0.358 |
| 1907 | 0.35 |
| 1908 | 0.324 |
| 1909 | 0.377 |
| 1911 | 0.42 |
| 1912 | 0.409 |
| 1913 | 0.39 |
| 1914 | 0.368 |
| 1915 | 0.369 |
| 1916 | 0.386 |
| 1917 | 0.383 |
| 1918 | 0.382 |
| 1919 | 0.384 |
| 1920 | 0.407 |
| 1921 | 0.394 |
| 1922 | 0.42 |
| 1923 | 0.403 |
| 1924 | 0.378 |
| 1925 | 0.393 |
| 1926 | 0.378 |
| 1927 | 0.398 |
| 1928 | 0.379 |
| 1929 | 0.369 |
| 1930 | 0.381 |
| 1931 | 0.39 |
| 1932 | 0.367 |
| 1933 | 0.356 |
| 1934 | 0.363 |
| 1935 | 0.349 |
| 1936 | 0.388 |
| 1937 | 0.371 |
| 1938 | 0.349 |
| 1939 | 0.381 |
| 1940 | 0.352 |
| 1941 | 0.406 |
| 1942 | 0.356 |
| 1943 | 0.328 |
| 1944 | 0.327 |
| 1945 | 0.309 |
| 1946 | 0.353 |
| 1947 | 0.343 |
| 1948 | 0.369 |
| 1949 | 0.343 |
| 1950 | 0.354 |
| 1951 | 0.344 |
| 1952 | 0.327 |
| 1953 | 0.337 |
| 1954 | 0.341 |
| 1955 | 0.34 |
| 1956 | 0.353 |
| 1957 | 0.388 |
| 1958 | 0.328 |
| 1959 | 0.353 |
| 1960 | 0.32 |
| 1961 | 0.361 |
| 1962 | 0.326 |
| 1963 | 0.321 |
| 1964 | 0.323 |
| 1965 | 0.321 |
| 1966 | 0.316 |
| 1967 | 0.326 |
| 1968 | 0.301 |
| 1969 | 0.332 |
| 1970 | 0.329 |
| 1971 | 0.337 |
| 1972 | 0.318 |
| 1973 | 0.35 |
| 1974 | 0.364 |
| 1975 | 0.359 |
| 1976 | 0.333 |
| 1977 | 0.388 |
| 1978 | 0.333 |
| 1979 | 0.333 |
| 1980 | 0.39 |
| 1981 | 0.336 |
| 1982 | 0.332 |
| 1983 | 0.361 |
| 1984 | 0.343 |
| 1985 | 0.368 |
| 1986 | 0.357 |
| 1987 | 0.363 |
| 1988 | 0.366 |
| 1989 | 0.339 |
| 1990 | 0.329 |
| 1991 | 0.341 |
| 1992 | 0.343 |
| 1993 | 0.363 |
| 1994 | 0.359 |
| 1995 | 0.356 |
| 1996 | 0.358 |
| 1997 | 0.347 |
| 1998 | 0.339 |
| 1999 | 0.357 |
| 2000 | 0.372 |
| 2001 | 0.35 |
| 2002 | 0.349 |
| 2003 | 0.326 |
| 2004 | 0.372 |
| 2005 | 0.331 |
| 2006 | 0.347 |
| 2007 | 0.363 |
| 2008 | 0.328 |
| 2009 | 0.365 |
| 2010 | 0.359 |
| 2011 | 0.344 |
| 2012 | 0.33 |
Sources:
en.wikipedia.org

Above is a timeline of the batting average that won the AL Batting Title. (note that the 1902 and 1910 titles were disputed)