1972

7.4

1999

7.7

2021

7.2

1990

7.5

1992

7.0

1998

5.9

2009

6.5

1966

4.6

2013

7.7

2015

7.4

2011

7.6

1972

4.6

1975

0.0

1992

5.4

2003

1.2

1984

6.3

1964

7.7

1993

7.0

2020

0.0

1981

6.8