Year annual % 1991 139.8268069298287 1992 945.0305219548213 1993 860.4572212910343 1994 276.44112747184136 1995 38.7375203768224 1996 27.851977344564702 1997 12.50293981705424 1998 9.461730171716127 1999 39.78166601361161 2000 27.328751985975956 2001 12.08925097336811 2002 9.827402063710664 2003 14.86597246169947 2004 7.987086857052802 2005 9.344144075930089 2006 13.418141240361734 2007 15.90871496183523 2008 9.244248825769802 2009 2.1693917045123783 2010 33.30493209779843 2011 8.190798598622422 2012 7.424222019975218 2013 3.9238512218232557 2014 5.143207217029229 2015 11.574314959116847 2016 3.550873830887099 2017 6.252466491432983 2018 3.2110321322372783 2019 5.3517120034664885 2020 5.575009400965072 2021 6.3817285513401885 2022 19.25320363083219 2023 8.708390487867533