1977

7.6

2014

6.9

2002

6.9

2001

9.9

2021

10.0

2024

9.4

1999

8.0

2023

8.7

1980

6.7

2000

5.5

2009

8.5

2013

5.8

1980

7.8

1993

6.2

2002

7.1

2014

6.1

2013

6.8

1972

6.4

2017

6.5