1

2

3

4

5

6

7

8

9

10

11

12

1950

-3

-3

-3

-3

-3

-3

-3

-3

-3.2

-3.2

-3.2

-3.2

1951

-3.2

-3.2

-3.2

-3.2

-3.2

-3.2

-3.2

-3.3

-3.3

-3.3

-3.3

-3.3

1952

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

1953

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

-3.3

1954

-3.3

-3.3

-3.3

-3.3

-3.3

-3.2

-3.2

-3.2

-3.4

-3.4

-3.4

-3.4

1955

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

1956

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

1957

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

1958

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

1959

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

1960

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

1961

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

1962

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.4

-3.5

-3.5

1963

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

1964

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

1

2

3

4

5

6

7

8

9

10

11

12

1965

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

1966

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

1967

-3.5

-3.5

-3.5

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

1968

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

1969

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

1970

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

-3.7

1971

-3.7

-3.7

-3.7

-3.6

-3.6

-3.6

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

1972

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-3.5

-1.2

1973

-1.2

-1.2

-1.2

-1.2

-1.2

-1.2

-1.1

-1.1

-1.1

-0.5

-0.5

-0.5

1974

-0.5

-0.5

-0.5

-0.5

-0.5

-0.5

-0.5

-0.5

-0.5

-0.4

-0.4

-0.4

1975

-0.4

-0.4

-0.4

-0.4

-0.4

-0.3

-0.3

-0.3

-0.3

-0.3

-0.3

-0.3

1976

-0.3

-0.3

-0.3

-0.3

-0.3

0

0

0

0

0

0

0

1977

0

0

0

0

0

0

0

0

0

0

0

0

1978

0

0

0

0

0

0

0

0

0

0.2

0.2

0.2

1979

0.2

0.2

0.3

0.3

0.3

0.4

0.4

0.4

0.4

0.4

0.4

0.4

1

2

3

4

5

6

7

8

9

10

11

12

1980

0.4

0.4

0.4

0.4

0.6

0.6

0.7

0.7

0.7

0.7

0.7

0.7

1981

0.8

0.8

0.8

0.8

0.8

0.8

0.8

0.8

0.8

0.8

0.8

0.8

1982

0.8

0.8

0.8

0.8

0.8

0.8

0.8

1

1

1

1

1

1983

1

1

1

1.3

1.3

1.3

1.3

1.4

1.4

1.4

1.4

1.4

1984

1.4

1.6

1.6

1.6

1.6

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1985

1.7

1.7

1.7

2

2

2

2

2

2

2

2

2

1986

2

2

2

2

2.2

2.2

2.2

2.2

2.3

2.3

2.3

2.3

1987

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

2.3

1988

2.3

2.5

2.5

2.5

2.5

2.5

2.6

2.6

2.6

2.6

2.8

2.8

1989

2.8

2.8

2.8

2.8

2.8

2.3

1.7

1.7

1.7

1.7

1.7

1.7

1990

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1.7

1991

1.7

1.7

1.7

1.8

1.8

1.8

1.9

1.9

1.9

1.9

1.9

1.9

1992

1.9

1.9

1.9

2

2

2.1

2.1

2.1

2.1

2.1

2.1

2.1

1993

2.1

2.1

2.1

2.1

2.1

2.3

2.3

2.3

2.4

2.4

2.5

2.5

1994

2.5

2.5

2.5

2.5

2.5

2.6

2.6

2.6

2.6

2.6

2.7

2.7

1

2

3

4

5

6

7

8

9

10

11

12

1995

2.7

2.7

2.7

2.7

2.7

2.8

2.8

2.8

2.8

2.9

2.9

2.9

1996

2.9

2.9

2.9

2.9

2.9

2.9

2.9

3.1

2.8

2.8

2.8

2.8

1997

2.8

2.8

3

3

3.1

3.1

3.1

3.1

3.3

3.3

3.3

3.3

1998

3.3

3.3

3.3

3.3

3.3

3.3

3.3

3.4

3.4

3.4

3.5

3.5

1999

3.5

3.5

3.5

3.5

3.6

3.6

3.7

3.7

4.3

4.3

4.2

4.2

2000

4.2

4.2

4.2

4.2

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

2001

4.3

4.2

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.4

4.4

4.4

2002

4.4

4.4

4.4

4.4

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.5

2003

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.6

4.6

4.7

4.7

4.7

2004

4.7

4.7

4.7

4.7

4.7

4.7

4.7

4.7

4.7

4.8

4.9

4.9

2005

4.9

4.9

4.9

5

5

5

5

5

5

5.1

5.1

5.1

2006

5.1

5.1

5.1

5.2

5.2

5.2

5.2

5.2

5.2

5.2

5.2

5.2

2007

5.2

5.2

5.2

5.2

5.2

5.1

5.2

5.2

5.4

5.4

5.4

5.4

2008

5.4

5.4

5.4

5.6

5.6

5.6

5.6

5.7

5.7

5.7

5.7

5.7

2009

5.7

5.7

5.7

5.7

5.7

5.7

5.6

5.6

5.6

5.7

5.7

5.7

1

2

3

4

5

6

7

8

9

10

11

12

2010

5.7

5.7

5.7

5.7

5.7

5.8

5.8

5.8

5.8

5.8

5.8

5.8

2011

5.8

5.8

5.8

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.9

2012

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.9

5.9

2013

5.9

5.9

5.9

6.3

6.3

6.3

6.3

6.3

6.3

6.4

6.3

6.3

2014

6.3

6.3

6.3

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.6

6.6

1

2

3

4

5

6

7

8

9

10

11

12

2015

6.6

6.6

6.6

6.6

6.6

6.7

6.7

6.7

6.7

6.7

6.7

6.7

2016

6.7

6.5

6.4

6.5

6.5

6.5

6.2

6.2

6.2

6.2

6.2

6.2

2017

6.2

6.2

6.2

6.2

6.2

6.2

6.2

6.2

6.2

6.2

6.1

5.9

2018

5.9

5.9

5.9

5.8

5.8