Popularity in the United States
Numbers
| Lou (masculine) | Lou (feminine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2023 | - | - | - | - | ||
| 2022 | - | - | - | - | ||
| 2021 | - | - | - | - | ||
| 2020 | - | - | - | - | ||
| 2019 | - | - | - | - | ||
| 2018 | - | - | - | - | ||
| 2017 | - | - | - | - | ||
| 2016 | - | - | - | - | ||
| 2015 | - | - | - | - | ||
| 2014 | - | - | - | - | ||
| 2013 | - | - | - | - | ||
| 2012 | - | - | - | - | ||
| 2011 | - | - | - | - | ||
| 2010 | - | - | - | - | ||
| 2009 | - | - | - | - | ||
| 2008 | - | - | - | - | ||
| 2007 | - | - | - | - | ||
| 2006 | - | - | - | - | ||
| 2005 | - | - | - | - | ||
| 2004 | - | - | - | - | ||
| 2003 | - | - | - | - | ||
| 2002 | - | - | - | - | ||
| 2001 | - | - | - | - | ||
| 2000 | - | - | - | - | ||
| 1999 | - | - | - | - | ||
| 1998 | - | - | - | - | ||
| 1997 | - | - | - | - | ||
| 1996 | - | - | - | - | ||
| 1995 | - | - | - | - | ||
| 1994 | - | - | - | - | ||
| 1993 | - | - | - | - | ||
| 1992 | - | - | - | - | ||
| 1991 | - | - | - | - | ||
| 1990 | - | - | - | - | ||
| 1989 | - | - | - | - | ||
| 1988 | - | - | - | - | ||
| 1987 | - | - | - | - | ||
| 1986 | - | - | - | - | ||
| 1985 | - | - | - | - | ||
| 1984 | - | - | - | - | ||
| 1983 | - | - | - | - | ||
| 1982 | - | - | - | - | ||
| 1981 | - | - | - | - | ||
| 1980 | - | - | - | - | ||
| 1979 | - | - | - | - | ||
| 1978 | - | - | - | - | ||
| 1977 | - | - | - | - | ||
| 1976 | - | - | - | - | ||
| 1975 | - | - | - | - | ||
| 1974 | - | - | - | - | ||
| 1973 | - | - | - | - | ||
| 1972 | - | - | - | - | ||
| 1971 | - | - | #951 | 0.008 | ||
| 1970 | - | - | #849 | 0.009 | ||
| 1969 | - | - | #801 | 0.009 | ||
| 1968 | - | - | #767 | 0.010 | ||
| 1967 | - | - | #753 | 0.010 | ||
| 1966 | - | - | #724 | 0.011 | ||
| 1965 | - | - | #656 | 0.012 | ||
| 1964 | - | - | #598 | 0.014 | ||
| 1963 | - | - | #496 | 0.019 | ||
| 1962 | - | - | #487 | 0.020 | ||
| 1961 | - | - | #447 | 0.023 | ||
| 1960 | #944 | 0.003 | #390 | 0.029 | ||
| 1959 | - | - | #358 | 0.034 | ||
| 1958 | #928 | 0.003 | #314 | 0.041 | ||
| 1957 | #888 | 0.003 | #309 | 0.042 | ||
| 1956 | - | - | #258 | 0.052 | ||
| 1955 | - | - | #232 | 0.061 | ||
| 1954 | - | - | #204 | 0.075 | ||
| 1953 | - | - | #207 | 0.074 | ||
| 1952 | - | - | #345 | 0.030 | ||
| 1951 | #943 | 0.003 | #389 | 0.024 | ||
| 1950 | - | - | #395 | 0.023 | ||
| 1949 | - | - | #374 | 0.025 | ||
| 1948 | - | - | #379 | 0.025 | ||
| 1947 | #938 | 0.003 | #355 | 0.028 | ||
| 1946 | #980 | 0.003 | #343 | 0.030 | ||
| 1945 | #927 | 0.004 | #341 | 0.030 | ||
| 1944 | - | - | #314 | 0.034 | ||
| 1943 | - | - | #330 | 0.032 | ||
| 1942 | #971 | 0.003 | #293 | 0.039 | ||
| 1941 | - | - | #286 | 0.041 | ||
| 1940 | - | - | #281 | 0.042 | ||
| 1939 | #904 | 0.004 | #277 | 0.044 | ||
| 1938 | - | - | #274 | 0.047 | ||
| 1937 | - | - | #269 | 0.049 | ||
| 1936 | - | - | #270 | 0.047 | ||
| 1935 | - | - | #269 | 0.048 | ||
| 1934 | - | - | #263 | 0.052 | ||
| 1933 | - | - | #265 | 0.051 | ||
| 1932 | #980 | 0.004 | #270 | 0.049 | ||
| 1931 | - | - | #290 | 0.042 | ||
| 1930 | - | - | #306 | 0.040 | ||
| 1929 | - | - | #308 | 0.041 | ||
| 1928 | - | - | #320 | 0.036 | ||
| 1927 | - | - | #303 | 0.040 | ||
| 1926 | - | - | #323 | 0.034 | ||
| 1925 | - | - | #337 | 0.031 | ||
| 1924 | - | - | #348 | 0.029 | ||
| 1923 | - | - | #356 | 0.027 | ||
| 1922 | - | - | #347 | 0.028 | ||
| 1921 | - | - | #377 | 0.025 | ||
| 1920 | - | - | #356 | 0.027 | ||
| 1919 | - | - | #361 | 0.027 | ||
| 1918 | - | - | #335 | 0.031 | ||
| 1917 | #964 | 0.005 | #338 | 0.030 | ||
| 1916 | - | - | #351 | 0.028 | ||
| 1915 | - | - | #354 | 0.028 | ||
| 1914 | #884 | 0.006 | #348 | 0.028 | ||
| 1913 | - | - | #342 | 0.030 | ||
| 1912 | #970 | 0.005 | #315 | 0.036 | ||
| 1911 | - | - | #316 | 0.035 | ||
| 1910 | #707 | 0.009 | #317 | 0.034 | ||
| 1909 | - | - | #307 | 0.038 | ||
| 1908 | #685 | 0.009 | #292 | 0.041 | ||
| 1907 | #778 | 0.008 | #312 | 0.037 | ||
| 1906 | - | - | #334 | 0.032 | ||
| 1905 | #666 | 0.009 | #276 | 0.046 | ||
| 1904 | - | - | #297 | 0.040 | ||
| 1903 | #696 | 0.009 | #266 | 0.048 | ||
| 1902 | - | - | #285 | 0.043 | ||
| 1901 | #858 | 0.006 | #304 | 0.038 | ||
| 1900 | #699 | 0.008 | #274 | 0.044 | ||
| 1899 | #548 | 0.011 | #251 | 0.051 | ||
| 1898 | #701 | 0.008 | #236 | 0.057 | ||
| 1897 | #584 | 0.011 | #267 | 0.046 | ||
| 1896 | #722 | 0.008 | #245 | 0.052 | ||
| 1895 | #739 | 0.007 | #252 | 0.051 | ||
| 1894 | #594 | 0.010 | #249 | 0.050 | ||
| 1893 | #650 | 0.008 | #222 | 0.061 | ||
| 1892 | #748 | 0.007 | #222 | 0.061 | ||
| 1891 | #700 | 0.007 | #231 | 0.055 | ||
| 1890 | #667 | 0.008 | #210 | 0.065 | ||
| 1889 | #446 | 0.014 | #210 | 0.063 | ||
| 1888 | #647 | 0.008 | #172 | 0.089 | ||
| 1887 | #583 | 0.009 | #167 | 0.095 | ||
| 1886 | #647 | 0.008 | #178 | 0.084 | ||
| 1885 | #521 | 0.011 | #158 | 0.095 | ||
| 1884 | #613 | 0.008 | #145 | 0.106 | ||
| 1883 | #556 | 0.010 | #136 | 0.118 | ||
| 1882 | #611 | 0.008 | #137 | 0.113 | ||
| 1881 | #442 | 0.014 | #137 | 0.115 | ||
| 1880 | #482 | 0.012 | #122 | 0.134 | ||
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