Year % 1997 4.28571428571429 1998 4.28571428571429 1999 11.2676056338028 2001 5.71428571428571 2002 5.71428571428571 2003 5.71428571428571 2004 8.45070422535211 2005 8.45070422535211 2014 14 2015 16 2016 16 2017 16 2018 19.6078431372549 2019 19.6078431372549 2020 19.6078431372549 2021 21.5686274509804 2022 19.6078431372549 2023 10.9090909090909