Year | Release in nature | Escape from confinement | Corridor | Transport- contaminant | T-S/ballast water | T-S/hull fouling | T-S/other |
---|---|---|---|---|---|---|---|
1949-1951 | 1 | 0 | 9 | 2 | 5 | 2 | 0 |
1952-1957 | 0 | 0 | 19 | 4 | 2 | 7 | 0 |
1958-1963 | 3 | 5 | 20 | 4 | 10 | 10 | 0 |
1964-1969 | 1 | 1 | 43 | 4 | 13 | 15 | 0 |
1970-1975 | 4 | 2 | 40 | 15 | 14 | 15 | 3 |
1976-1981 | 1 | 4 | 28 | 17 | 25 | 23 | 3 |
1982-1987 | 2 | 7 | 23 | 14 | 26 | 23 | 5 |
1988-1993 | 2 | 2 | 42 | 15 | 35 | 34 | 0 |
1994-1999 | 4 | 6 | 64 | 26 | 44 | 45 | 3 |
2000-2005 | 2 | 6 | 57 | 19 | 79 | 62 | 11 |
2006-2011 | 2 | 20 | 53 | 21 | 56 | 27 | 2 |
2012-2017 | 1 | 17 | 50 | 7 | 37 | 24 | 6 |