Year % 2000 0.0160819388334012 2001 0.0199221811670979 2002 0.019486532552643 2003 0.0213242755048412 2004 0.0182149463225586 2005 0.0185790561113701 2006 0.0198034928206218 2007 0.012837595954726 2008 0.0179644278485186 2009 0.0147118139852642 2010 0.0144000239329607 2011 0.00968868656334331 2012 0.0147610042625853 2013 0.0144198905602135 2014 0.00876528341418736 2015 0.00964597528068653 2016 0.00882617048894481 2017 0.00937514621045484 2018 0.0092388838188025 2019 0.00894399136894572 2020 0.00904460347144852