6.9%
2
4
6
8
10
12
14%
5.2%
1981
9%
1982
10.8%
1983
15.20%
1984
13.60%
1985
8.9%
1986
11.70%
1987
11.3%
1988
4.2%
1989
3.90%
1990
9.3%
1991
14.3%
1992
13.9%
1993
13.10%
1994
11%
1995
9.9%
1996
9.20%
1997
7.9%
1998
7.60%
1999
8.4%
2000
8.3%
2001
9.1%
2002
10%
2003
10.10%
2004
11.4%
2005
12.70%
2006
14.20%
2007
9.60%
2008
9.20%
2009
10.60%
2010
9.5%
2011
7.80%
2012
7.7%
2013
7.30%
2014
6.9%
2015
