Year annual % 1985 1.3683546891044358 1986 0.4222692580239311 1987 1.252035643900001 1988 2.825486358591604 1989 5.021210779533462 1990 2.829262523714334 1991 3.719124221102234 1992 6.419959108663619 1993 5.965740436710092 1994 6.850361954699167 1995 7.672176130963578 1996 7.6077998805168505 1997 6.570647246065249 1998 4.297434227728473 1999 3.4387809133900333 2000 5.601279268034148 2001 5.106408112049138 2002 5.233738850394914 2003 5.805460735337078 2004 6.444990449470467 2005 6.472490512099725 2006 5.946165320646827 2007 6.105167320524885 2008 4.631076534655961 2009 4.318505014415706 2010 5.2932928792235145 2011 5.2832569158295115 2012 4.379562786065819 2013 4.423447221953964 2014 5.293387384123321 2015 5.877849304686862 2016 5.618680103240223 2017 5.909240973363339 2018 6.467191497690109 2019 6.392585945044885 2020 1.9373565936545987 2021 1.691632688411147 2022 7.331941087074952 2023 4.332271058998856