PEB Frequency Table
| Note: Year is based on the report date of the PEBs. |
| Year | Railroad | Airline | Year Total |
Cumulative Total |
|---|---|---|---|---|
| TOTAL | 208 | 35 | -- | 243 |
| 2012 | 1 | 0 | 1 | 243 |
| 2011 | 0 | 0 | 0 | 242 |
| 2010 | 0 | 0 | 0 | 242 |
| 2009 | 0 | 0 | 0 | 242 |
| 2008 | 1 | 0 | 1 | 242 |
| 2007 | 2 | 0 | 2 | 241 |
| 2006 | 1 | 0 | 1 | 239 |
| 2005 | 0 | 0 | 0 | 238 |
| 2004 | 2 | 0 | 2 | 238 |
| 2003 | 0 | 0 | 0 | 236 |
| 2002 | 0 | 1 | 1 | 236 |
| 2001 | 0 | 1 | 1 | 235 |
| 2000 | 0 | 0 | 0 | 234 |
| 1999 | 0 | 0 | 0 | 234 |
| 1998 | 0 | 0 | 0 | 234 |
| 1997 | 2 | 1 | 3 | 234 |
| 1996 | 4 | 0 | 4 | 231 |
| 1995 | 2 | 0 | 2 | 227 |
| 1994 | 2 | 0 | 2 | 225 |
| 1993 | 1 | 0 | 1 | 223 |
| 1992 | 3 | 0 | 3 | 222 |
| 1991 | 1 | 0 | 1 | 219 |
| 1990 | 0 | 0 | 0 | 218 |
| 1989 | 2 | 0 | 2 | 218 |
| 1988 | 4 | 0 | 4 | 216 |
| 1987 | 0 | 0 | 0 | 212 |
| 1986 | 5 | 0 | 5 | 212 |
| 1985 | 1 | 0 | 1 | 207 |
| 1984 | 5 | 0 | 5 | 206 |
| 1983 | 3 | 0 | 3 | 201 |
| 1982 | 5 | 0 | 5 | 198 |
| 1981 | 0 | 0 | 0 | 193 |
| 1980 | 2 | 0 | 2 | 193 |
| 1979 | 2 | 1 | 3 | 191 |
| 1978 | 1 | 0 | 1 | 188 |
| 1977 | 0 | 0 | 0 | 187 |
| 1976 | 0 | 0 | 0 | 187 |
| 1975 | 2 | 0 | 2 | 187 |
| 1974 | 2 | 0 | 2 | 185 |
| 1973 | 1 | 0 | 1 | 183 |
| 1972 | 3 | 0 | 3 | 182 |
| 1971 | 1 | 0 | 1 | 179 |
| 1970 | 2 | 0 | 2 | 178 |
| 1969 | 4 | 0 | 4 | 176 |
| 1968 | 1 | 0 | 1 | 172 |
| 1967 | 3 | 0 | 3 | 171 |
| 1966 | 0 | 3 | 3 | 168 |
| 1965 | 1 | 0 | 1 | 165 |
| 1964 | 6 | 1 | 7 | 164 |
| 1963 | 3 | 1 | 4 | 157 |
| 1962 | 6 | 4 | 10 | 153 |
| 1961 | 6 | 4 | 10 | 143 |
| 1960 | 7 | 1 | 8 | 133 |
| 1959 | 0 | 1 | 1 | 125 |
| 1958 | 0 | 5 | 5 | 124 |
| 1957 | 5 | 0 | 5 | 119 |
| 1956 | 0 | 0 | 0 | 114 |
| 1955 | 6 | 1 | 7 | 114 |
| 1954 | 3 | 0 | 3 | 107 |
| 1953 | 1 | 1 | 2 | 104 |
| 1952 | 2 | 4 | 6 | 102 |
| 1951 | 2 | 1 | 3 | 96 |
| 1950 | 14 | 1 | 15 | 93 |
| 1949 | 11 | 1 | 12 | 78 |
| 1948 | 14 | 1 | 15 | 66 |
| 1947 | 7 | 0 | 7 | 51 |
| 1946 | 14 | 1 | 15 | 44 |
| 1945 | 13 | 0 | 13 | 29 |
| 1944 | 4 | 0 | 4 | 16 |
| 1943 | 0 | 0 | 0 | 12 |
| 1942 | 0 | 0 | 0 | 12 |
| 1941 | 5 | 0 | 5 | 12 |
| 1940 | 1 | 0 | 1 | 7 |
| 1939 | 0 | 0 | 0 | 6 |
| 1938 | 1 | 0 | 1 | 6 |
| 1937 | 4 | 0 | 4 | 5 |
| 1936 | 1 | 0 | 1 | 1 |
| 1935 | 0 | 0 | 0 | 0 |
| 1934 | 0 | 0 | 0 | 0 |