Year % (national estimate) 1992 5.3 1999 6.4 2000 5.2 2001 4.8 2002 4.4 2006 4.5 2009 2.918 2012 3.51 2013 3.984 2014 3.649 2017 2.62 2018 3.279 2019 4.689 2020 6.236 2021 9.842 2022 12.393 2023 12.869