Year annual % 1990 22.4491856838927 1991 28.1126043575921 1992 25.3754811221571 1993 24.4619863302073 1994 31.169954274434 1995 26.8619513563324 1996 19.3136558404147 1997 20.5872321472553 1998 14.2221136258 1999 11.54 2000 8.20110424713742 2001 4.81596921527445 2002 7.2330306793359 2003 8.41868264342142 2004 6.88562313045458 2005 6.42620252307937 2006 5.51009528749724 2007 9.09938952758738 2008 16.3807546294266 2009 9.04166245405979 2010 9.42871625296149 2011 12.1984228784034 2012 10.4838939974038 2013 9.66618357795825 2014 6.05084588935551 2015 7.59136402332241 2016 7.47203366759727 2017 2.63812393333545 2018 3.04136223867999 2019 2.2804089300173 2020 6.42301399038681 2021 2.67430327389397 2022 2.76261483337198 2023 2.79782861502682