Year Percent of total labor force (Units) 2002 5.200 2003 4.900 2004 3.600 2005 3.000 2006 5.200 2007 4.990 2008 4.893 2009 5.041 2010 5.357 2011 4.963 2012 4.874 2013 4.860 2014 5.087 2015 5.153 2016 5.163 2017 5.830 2018 9.347 2019 8.976 2020 10.531 2021 9.625 2022 8.851 2023 8.351 2024 7.851 2025 7.351 2026 6.851 2027 6.351 2028 5.851 2029 5.351