Year | Very high | High | Moderate |
---|---|---|---|
1980 | 12 | 18 | 69 |
1981 | 22 | 20 | 43 |
1982 | 10 | 17 | 65 |
1983 | 13 | 12 | 67 |
1984 | 6 | 13 | 40 |
1985 | 9 | 5 | 21 |
1986 | 4 | 11 | 29 |
1987 | 20 | 12 | 46 |
1988 | 17 | 20 | 34 |
1989 | 12 | 11 | 28 |
1990 | 23 | 17 | 22 |
1991 | 20 | 18 | 34 |
1992 | 25 | 28 | 35 |
1993 | 26 | 21 | 45 |
1994 | 42 | 14 | 31 |
1995 | 35 | 25 | 54 |
1996 | 19 | 19 | 52 |
1997 | 31 | 27 | 97 |
1998 | 44 | 20 | 32 |
1999 | 33 | 30 | 68 |
2000 | 38 | 41 | 49 |
2001 | 34 | 21 | 135 |
2002 | 77 | 32 | 64 |
2003 | 28 | 37 | 99 |
2004 | 23 | 35 | 73 |
2005 | 54 | 23 | 66 |
2006 | 42 | 37 | 120 |
2007 | 47 | 31 | 83 |
2008 | 29 | 27 | 64 |
2009 | 23 | 40 | 77 |
2010 | 71 | 46 | 204 |