Rate of imprisonment in state or federal correctional facilities, 1925–2011
| Year | Imprisonment rate |
|---|---|
| 1925 | 79 |
| 1926 | 83 |
| 1927 | 91 |
| 1928 | 96 |
| 1929 | 98 |
| 1930 | 104 |
| 1931 | 110 |
| 1932 | 110 |
| 1933 | 109 |
| 1934 | 109 |
| 1935 | 113 |
| 1936 | 113 |
| 1937 | 118 |
| 1938 | 123 |
| 1939 | 137 |
| 1940 | 132 |
| 1941 | 124 |
| 1942 | 112 |
| 1943 | 102 |
| 1944 | 100 |
| 1945 | 101 |
| 1946 | 100 |
| 1947 | 106 |
| 1948 | 108 |
| 1949 | 111 |
| 1950 | 111 |
| 1951 | 110 |
| 1952 | 110 |
| 1953 | 111 |
| 1954 | 115 |
| 1955 | 114 |
| 1956 | 115 |
| 1957 | 116 |
| 1958 | 120 |
| 1959 | 119 |
| 1960 | 119 |
| 1961 | 120 |
| 1962 | 118 |
| 1963 | 115 |
| 1964 | 112 |
| 1965 | 109 |
| 1966 | 102 |
| 1967 | 99 |
| 1968 | 94 |
| 1969 | 98 |
| 1970 | 97 |
| 1971 | 96 |
| 1972 | 94 |
| 1973 | 97 |
| 1974 | 103 |
| 1975 | 113 |
| 1976 | 122 |
| 1977 | 128 |
| 1978 | 130 |
| 1979 | 132 |
| 1980 | 134 |
| 1981 | 150 |
| 1982 | 166 |
| 1983 | 173 |
| 1984 | 181 |
| 1985 | 195 |
| 1986 | 215 |
| 1987 | 222 |
| 1988 | 238 |
| 1989 | 264 |
| 1990 | 284 |
| 1991 | 300 |
| 1992 | 319 |
| 1993 | 338 |
| 1994 | 367 |
| 1995 | 393 |
| 1996 | 407 |
| 1997 | 420 |
| 1998 | 433 |
| 1999 | 432 |
| 2000 | 421 |
| 2001 | 421 |
| 2002 | 429 |
| 2003 | 432 |
| 2004 | 436 |
| 2005 | 438 |
| 2006 | 443 |
| 2007 | 445 |
| 2008 | 443 |
| 2009 | 438 |
| 2010 | 434 |
| 2011 | 423 |
Source: Author's calculation of Minor-Harper (1986) and Carson and Mulako-Wangota (2013)