Year annual % 1990 22.4709370974082 1991 21.3909823000844 1992 13.4643770215386 1993 12.1644196722728 1994 14.4639849515997 1995 11.6807181078817 1996 4.07977619624471 1997 3.33058050494175 1998 0.778990205960753 1999 2.18776787056487 2000 4.56004348689325 2001 4.27714698160932 2002 3.34066036755067 2003 4.30030088589093 2004 7.02476170687822 2005 7.12031535651923 2006 12.3498959180141 2007 5.08875706456591 2008 0.31113250293626 2009 3.57779503707295 2010 8.85744149583176 2011 3.26051486014924 2012 0.76346667921203 2013 2.26077061226466 2014 5.85289162817273 2015 4.95436552710441 2016 4.56065604390805 2017 4.82819188168904 2018 1.59019973757384 2019 2.56778721379496 2020 9.66572269693961 2021 6.9147558846894 2022 7.91378346570282 2023 6.59951204566833