Year,Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec
1948,3.4,3.8,4,3.9,3.5,3.6,3.6,3.9,3.8,3.7,3.8,4
1949,4.3,4.7,5,5.3,6.1,6.2,6.7,6.8,6.6,7.9,6.4,6.6
1950,6.5,6.4,6.3,5.8,5.5,5.4,5,4.5,4.4,4.2,4.2,4.3
1951,3.7,3.4,3.4,3.1,3,3.2,3.1,3.1,3.3,3.5,3.5,3.1
1952,3.2,3.1,2.9,2.9,3,3,3.2,3.4,3.1,3,2.8,2.7
1953,2.9,2.6,2.6,2.7,2.5,2.5,2.6,2.7,2.9,3.1,3.5,4.5
1954,4.9,5.2,5.7,5.9,5.9,5.6,5.8,6,6.1,5.7,5.3,5
1955,4.9,4.7,4.6,4.7,4.3,4.2,4,4.2,4.1,4.3,4.2,4.2
1956,4,3.9,4.2,4,4.3,4.3,4.4,4.1,3.9,3.9,4.3,4.2
1957,4.2,3.9,3.7,3.9,4.1,4.3,4.2,4.1,4.4,4.5,5.1,5.2
1958,5.8,6.4,6.7,7.4,7.4,7.3,7.5,7.4,7.1,6.7,6.2,6.2
1959,6,5.9,5.6,5.2,5.1,5,5.1,5.2,5.5,5.7,5.8,5.3
1960,5.2,4.8,5.4,5.2,5.1,5.4,5.5,5.6,5.5,6.1,6.1,6.6
1961,6.6,6.9,6.9,7,7.1,6.9,7,6.6,6.7,6.5,6.1,6
1962,5.8,5.5,5.6,5.6,5.5,5.5,5.4,5.7,5.6,5.4,5.7,5.5
1963,5.7,5.9,5.7,5.7,5.9,5.6,5.6,5.4,5.5,5.5,5.7,5.5
1964,5.6,5.4,5.4,5.3,5.1,5.2,4.9,5,5.1,5.1,4.8,5
1965,4.9,5.1,4.7,4.8,4.6,4.6,4.4,4.4,4.3,4.2,4.1,4
1966,4,3.8,3.8,3.8,3.9,3.8,3.8,3.8,3.7,3.7,3.6,3.8
1967,3.9,3.8,3.8,3.8,3.8,3.9,3.8,3.8,3.8,4,3.9,3.8
1968,3.7,3.8,3.7,3.5,3.5,3.7,3.7,3.5,3.4,3.4,3.4,3.4
1969,3.4,3.4,3.4,3.4,3.4,3.5,3.5,3.5,3.7,3.7,3.5,3.5
1970,3.9,4.2,4.4,4.6,4.8,4.9,5,5.1,5.4,5.5,5.9,6.1
1971,5.9,5.9,6,5.9,5.9,5.9,6,6.1,6,5.8,6,6
1972,5.8,5.7,5.8,5.7,5.7,5.7,5.6,5.6,5.5,5.6,5.3,5.2
1973,4.9,5,4.9,5,4.9,4.9,4.8,4.8,4.8,4.6,4.8,4.9
1974,5.1,5.2,5.1,5.1,5.1,5.4,5.5,5.5,5.9,6,6.6,7.2
1975,8.1,8.1,8.6,8.8,9,8.8,8.6,8.4,8.4,8.4,8.3,8.2
1976,7.9,7.7,7.6,7.7,7.4,7.6,7.8,7.8,7.6,7.7,7.8,7.8
1977,7.5,7.6,7.4,7.2,7,7.2,6.9,7,6.8,6.8,6.8,6.4
1978,6.4,6.3,6.3,6.1,6,5.9,6.2,5.9,6,5.8,5.9,6
1979,5.9,5.9,5.8,5.8,5.6,5.7,5.7,6,5.9,6,5.9,6
1980,6.3,6.3,6.3,6.9,7.5,7.6,7.8,7.7,7.5,7.5,7.5,7.2
1981,7.5,7.4,7.4,7.2,7.5,7.5,7.2,7.4,7.6,7.9,8.3,8.5
1982,8.6,8.9,9,9.3,9.4,9.6,9.8,9.8,10.1,10.4,10.8,10.8
1983,10.4,10.4,10.3,10.2,10.1,10.1,9.4,9.5,9.2,8.8,8.5,8.3
1984,8,7.8,7.8,7.7,7.4,7.2,7.5,7.5,7.3,7.4,7.2,7.3
1985,7.3,7.2,7.2,7.3,7.2,7.4,7.4,7.1,7.1,7.1,7,7
1986,6.7,7.2,7.2,7.1,7.2,7.2,7,6.9,7,7,6.9,6.6
1987,6.6,6.6,6.6,6.3,6.3,6.2,6.1,6,5.9,6,5.8,5.7
1988,5.7,5.7,5.7,5.4,5.6,5.4,5.4,5.6,5.4,5.4,5.3,5.3
1989,5.4,5.2,5,5.2,5.2,5.3,5.2,5.2,5.3,5.3,5.4,5.4
1990,5.4,5.3,5.2,5.4,5.4,5.2,5.5,5.7,5.9,5.9,6.2,6.3
1991,6.4,6.6,6.8,6.7,6.9,6.9,6.8,6.9,6.9,7,7,7.3
1992,7.3,7.4,7.4,7.4,7.6,7.8,7.7,7.6,7.6,7.3,7.4,7.4
1993,7.3,7.1,7,7.1,7.1,7,6.9,6.8,6.7,6.8,6.6,6.5
1994,6.6,6.6,6.5,6.4,6.1,6.1,6.1,6,5.9,5.8,5.6,5.5
1995,5.6,5.4,5.4,5.8,5.6,5.6,5.7,5.7,5.6,5.5,5.6,5.6
1996,5.6,5.5,5.5,5.6,5.6,5.3,5.5,5.1,5.2,5.2,5.4,5.4
1997,5.3,5.2,5.2,5.1,4.9,5,4.9,4.8,4.9,4.7,4.6,4.7
1998,4.6,4.6,4.7,4.3,4.4,4.5,4.5,4.5,4.6,4.5,4.4,4.4
1999,4.3,4.4,4.2,4.3,4.2,4.3,4.3,4.2,4.2,4.1,4.1,4
2000,4,4.1,4,3.8,4,4,4,4.1,3.9,3.9,3.9,3.9
2001,4.2,4.2,4.3,4.4,4.3,4.5,4.6,4.9,5,5.3,5.5,5.7
2002,5.7,5.7,5.7,5.9,5.8,5.8,5.8,5.7,5.7,5.7,5.9,6
2003,5.8,5.9,5.9,6,6.1,6.3,6.2,6.1,6.1,6,5.8,5.7
2004,5.7,5.6,5.8,5.6,5.6,5.6,5.5,5.4,5.4,5.5,5.4,5.4
2005,5.3,5.4,5.2,5.2,5.1,5,5,4.9,5,5,5,4.9
2006,4.7,4.8,4.7,4.7,4.6,4.6,4.7,4.7,4.5,4.4,4.5,4.4
2007,4.6,4.5,4.4,4.5,4.4,4.6,4.7,4.6,4.7,4.7,4.7,5
2008,5,4.9,5.1,5,5.4,5.6,5.8,6.1,6.1,6.5,6.8,7.3
2009,7.8,8.3,8.7,9,9.4,9.5,9.5,9.6,9.8,10,9.9,9.9
2010,9.8,9.8,9.9,9.9,9.6,9.4,9.4,9.5,9.5,9.4,9.8,9.3
2011,9.1,9,9,9.1,9,9.1,9,9,9,8.8,8.6,8.5
2012,8.3,8.3,8.2,8.2,8.2,8.2,8.2,8.1,7.8,7.8,7.7,7.9
2013,8,7.7,7.5,7.6,7.5,7.5,7.3,7.2,7.2,7.2,6.9,6.7
2014,6.6,6.7,6.7,6.2,6.3,6.1,6.2,6.1,5.9,5.7,5.8,5.6
2015,5.7,5.5,5.4,5.4,5.6,5.3,5.2,5.1,5,5,5.1,5
2016,4.8,4.9,5,5.1,4.8,4.9,4.8,4.9,5,4.9,4.7,4.7
2017,4.7,4.6,4.4,4.4,4.4,4.3,4.3,4.4,4.3,4.2,4.2,4.1
2018,4,4.1,4,4,3.8,4,3.8,3.8,3.7,3.8,3.8,3.9
2019,4,3.8,3.8,3.6,3.7,3.6,3.7,3.7,3.5,3.6,3.6,3.6
2020,3.5,3.5,4.4,14.7,13.2,11,10.2,8.4,7.9,6.9,6.7,6.7
2021,6.3,6.2,6.1,6.1,5.8,5.9,5.4,5.2,4.8,4.5,4.2,3.9
2022,4,3.8,3.6,3.6,3.6,3.6,3.5,3.7,3.5,3.7,3.6,3.5