Year Percent change 1980 7.345 1981 1.056 1982 -2.797 1983 -1.5 1984 0.201 1985 0.757 1986 0.273 1987 -0.432 1988 0.559 1989 -1.131 1990 -0.44 1991 1.262 1992 -2.251 1993 -4.922 1994 -11.603 1995 9.892 1996 4.143 1997 2.705 1998 2.182 1999 2.71 2000 0.87 2001 -1.044 2002 -0.251 2003 0.364 2004 -3.523 2005 1.805 2006 2.249 2007 3.343 2008 0.844 2009 3.083 2010 -5.498 2011 5.524 2012 2.885 2013 4.241 2014 2.803 2015 1.211 2016 1.453 2017 1.173 2018 1.484 2019 1.476 2020 1.468 2021 1.512 2022 1.502 2023 1.604 2024 1.594