Table 2.
Year | January | February | March | April | May | June | July | August | September | October | November | December | Total |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1980 | 0.8 | 0.7 | 0.0 | 0.8 | 0.2 | 5.5 | 6.6 | 16.2 | 0.6 | 0.0 | 0.0 | 0.3 | 31.7 |
1981 | 0.0 | 1.1 | 0.0 | 2.9 | 1.0 | 8.8 | 17.8 | 26.2 | 0.9 | 0.5 | 0.0 | 0.1 | 59.3 |
1982 | 0.1 | 1.0 | 2.0 | 3.1 | 18.7 | 35.6 | 7.4 | 5.5 | 5.2 | 0.1 | 0.0 | 1.1 | 79.8 |
1983 | 0.5 | 0.4 | 1.1 | 0.0 | 2.2 | 16.7 | 28.7 | 6.3 | 2.2 | 2.1 | 0.0 | 0.0 | 60.2 |
1984 | 1.3 | 2.1 | 2.4 | 4.2 | 5.3 | 16.4 | 9.3 | 6.3 | 3.3 | 0.0 | 0.0 | 0.1 | 50.7 |
1985 | 0.2 | 0.0 | 0.3 | 0.0 | 7.8 | 8.5 | 6.8 | 0.7 | 2.4 | 0.0 | 0.1 | 1.9 | 28.7 |
1986 | 0.4 | 0.6 | 0.7 | 0.6 | 34.7 | 54.1 | 4.9 | 8.4 | 0.0 | 0.1 | 1.2 | 0.2 | 105.9 |
1987 | 0.0 | 0.2 | 1.4 | 5.7 | 5.3 | 24.0 | 9.9 | 0.7 | 1.7 | 2.9 | 0.3 | 0.3 | 52.4 |
1988 | 0.0 | 0.3 | 0.7 | 0.3 | 18.7 | 11.4 | 8.4 | 7.0 | 5.2 | 0.0 | 0.0 | 0.0 | 52.0 |
1989 | 4.6 | 0.0 | 0.8 | 4.8 | 1.5 | 32.9 | 5.3 | 6.8 | 4.0 | 0.5 | 0.0 | 0.5 | 61.7 |
1990 | 0.0 | 0.0 | 3.1 | 0.6 | 0.5 | 22.6 | 11.2 | 4.6 | 0.0 | 0.0 | 0.0 | 1.1 | 43.7 |
1991 | 0.0 | 0.0 | 0.9 | 4.9 | 0.8 | 3.8 | 7.1 | 14.7 | 0.0 | 0.0 | 0.0 | 0.0 | 32.2 |
1992 | 0.2 | 0.2 | 0.7 | 0.0 | 4.3 | 2.8 | 27.6 | 0.5 | 0.1 | 2.0 | 0.0 | 0.2 | 38.6 |
1993 | 0.6 | 0.9 | 1.6 | 0.0 | 1.8 | 45.0 | 27.1 | 8.9 | 0.0 | 0.0 | 0.0 | 1.1 | 87.0 |
1994 | 0.0 | 0.3 | 0.0 | 0.0 | 0.2 | 4.6 | 12.4 | 4.0 | 0.0 | 0.8 | 0.0 | 0.0 | 22.3 |
1995 | 0.1 | 1.0 | 0.0 | 5.2 | 0.0 | 4.1 | 2.1 | 3.6 | 12.0 | 4.7 | 0.0 | 0.0 | 32.8 |
1996 | 0.0 | 0.0 | 2.0 | 0.8 | 7.7 | 7.3 | 29.1 | 13.0 | 0.8 | 0.4 | 0.0 | 0.0 | 61.1 |
1997 | 0.0 | 0.0 | 0.0 | 0.0 | 11.0 | 8.8 | 8.3 | 18.2 | 0.0 | 0.0 | 0.0 | 0.0 | 46.3 |
1998 | 0.2 | 0.0 | 4.7 | 0.0 | 0.6 | 13.7 | 11.9 | 11.2 | 4.7 | 0.2 | 0.0 | 0.0 | 47.2 |
1999 | 0.0 | 0.0 | 2.4 | 0.0 | 0.3 | 19.0 | 13.2 | 4.9 | 0.0 | 0.2 | 0.0 | 0.0 | 40.0 |
2000 | 1.9 | 0.5 | 0.0 | 0.2 | 1.6 | 16.4 | 12.5 | 7.2 | 4.9 | 0.0 | 0.0 | 0.0 | 45.2 |
2001 | 0.0 | 0.4 | 0.0 | 0.0 | 0.8 | 3.9 | 1.1 | 5.8 | 0.1 | 0.0 | 0.0 | 0.0 | 12.1 |
2002 | 2.6 | 0.0 | 0.1 | 7.1 | 0.6 | 13.8 | 7.0 | 2.7 | 6.6 | 0.3 | 0.0 | 0.8 | 41.6 |
2003 | 0.0 | 1.4 | 3.1 | 0.9 | 4.1 | 21.0 | 14.7 | 0.0 | 2.6 | 0.3 | 0.0 | 0.2 | 48.3 |
2004 | 0.7 | 0.0 | 0.1 | 0.7 | 1.6 | 6.7 | 1.6 | 5.2 | 0.0 | 0.0 | 0.1 | 0.1 | 16.8 |
2005 | 0.0 | 2.2 | 5.4 | 0.0 | 32.4 | 2.6 | 22.5 | 21.3 | 0.6 | 1.3 | 0.0 | 0.0 | 88.3 |
2006 | 1.6 | 0.8 | 0.0 | 4.1 | 6.0 | 2.0 | 12.0 | 3.0 | 4.2 | 0.3 | 0.0 | 2.4 | 36.4 |
2007 | 0.0 | 0.0 | 0.1 | 0.9 | 2.7 | 17.8 | 14.6 | 0.3 | 11.9 | 1.8 | 0.0 | 0.0 | 50.1 |
2008 | 5.8 | 0.0 | 0.2 | 0.0 | 12.6 | 8.7 | 20.7 | 4.1 | 24.8 | 1.9 | 0.0 | 0.2 | 79.0 |
2009 | 0.0 | 1.2 | 0.3 | 0.0 | 7.7 | 1.0 | 6.3 | 0.0 | 0.2 | 0.0 | 0.0 | 1.1 | 17.8 |
2010 | 0 | 4.1 | 2.5 | 3.1 | 4.7 | 10.5 | 42.1 | 5.3 | 22.7 | 0.9 | 0 | 0.4 | 96.3 |
2011 | 0 | 0 | 0.8 | 2 | 2 | 12.6 | 6.3 | 15.5 | 3.9 | 0.1 | 0.8 | 0 | 44.0 |