Year annual % 1990 37.22544893222428 1991 44.293721483174366 1992 70.7795849691531 1993 67.07389162561577 1994 50.429559259354484 1995 47.69823585207419 1996 19.13145270490082 1997 23.899839075508595 1998 17.82788880524409 1999 31.789637108506387 2000 38.317045743372255 2001 14.897443807626578 2002 37.164038384686485 2003 15.294259047812275 2004 5.910357611378004 2005 26.984081028139467 2006 23.341531645213085 2007 24.247302946417378 2008 20.304541200488963 2009 32.643846152753504 2010 24.59658438514512 2011 7.787864690157781 2012 29.353796113361234 2013 16.34935086736173 2014 22.19935400548038 2015 26.08795532953844 2016 10.106564007305739 2017 5.087504384299844 2018 8.222356819807937 2019 13.385892315973857 2020 23.27762586545048 2021 1.8791468048428377 2022 8.736082054945104 2023 3.289450370911446