Year annual % 1986 2.69999999999986 1987 2.72638753651409 1988 2.36966824644552 1989 6.38888888888878 1990 23.8000000000003 1991 338.449111470112 1992 91.2979327269303 1993 72.8787913866333 1994 96.0573382686505 1995 62.0548336837992 1996 121.60754244925 1997 1058.37355921973 1998 18.672204442064 1999 2.57304281890206 2000 10.316262128999 2001 7.36093927231844 2002 5.81014365721825 2003 2.34864169582755 2004 6.14713074246273 2005 5.03883807111902 2006 7.26159462769944 2007 8.40253419005901 2008 12.3487195994021 2009 2.75320223914816 2010 2.43899060504113 2011 4.21990346601873 2012 2.95456829831022 2013 0.890093540913002 2014 -1.4181838026484 2015 -0.104633261008385 2016 -0.79864988645371 2017 2.06159619443141 2018 2.81454473824829 2019 3.10372944796781 2020 1.67244096855756 2021 3.29774435299515 2022 15.3252589264366 2023 9.44284140088564