Year % 1980 1.2416394001907307 1981 2.620344230094279 1982 7.350672131063965 1983 5.974096669574567 1984 2.1495595638078604 1985 -2.07731742028393 1986 3.1059612270233172 1987 2.7002432257309352 1988 -2.7720331129956355 1989 2.5206931195422038 1990 3.4516446668834533 1991 1.8043118551567234 1992 0.41563511949024096 1993 -3.651372090560293 1994 -7.989744153657332 1995 -1.412648187667412 1996 3.3549704729962277 1997 6.911698894072479 1998 7.356478445987 1999 7.204050340533894 2000 3.7106640819372525 2001 3.7266638897829796 2002 4.679724344606372 2003 2.6381466355667893 2004 -1.2828117050222392 2005 1.613277502857982 2006 2.1105777265815093 2007 -0.259570586367363 2008 -2.3056153427340447 2009 5.531122908922746 2010 -1.0024012141320253 2011 -1.4024287465911642 2012 3.585203529382422 2013 3.7553870554039825 2014 4.52230843210213 2015 4.3530722521732494 2016 2.901815389081081 2017 0.11255397304685194 2018 0.8215018719862046 2019 3.0243848205227337 2020 3.8386012044720834 2021 -0.19351705083566567 2022 2.5193109803191285 2023 4.91187623545216