Year annual % 1990 25.0086874853778 1991 26.2836710300963 1992 3.67417388031402 1993 10.9086143487444 1994 21.3388006751817 1995 23.7139686839353 1996 18.1935778444514 1997 16.3712580307104 1998 10.2989949131436 1999 7.57572728281066 2000 9.65735340118408 2001 8.08434938014908 2002 5.13193992154596 2003 5.75974076655675 2004 6.45198385160759 2005 7.27916415839877 2006 5.34866346521486 2007 6.62550716828601 2008 7.79051363926141 2009 7.65373242322937 2010 4.67604329499009 2011 7.8072052366428 2012 3.57978742613756 2013 1.37403051856492 2014 6.84935672480187 2015 6.9327703694637 2016 3.67806814426042 2017 4.5128429763521 2018 1.94721691531043 2019 3.35874088466439 2020 3.40198228348704 2021 4.60572808888793 2022 9.31239503002736 2023 6.1785877403702