Year per 100,000 people 1990 4.10030367874121 1991 2.16606866182826 1992 3.30427897773234 1993 1.90066250759473 1994 4.42587823650249 1995 3.02936209207746 1996 1.63206172708538 1997 1.61576589789354 2003 2.91271581039618 2004 2.6537609272933 2005 2.62880126091024 2006 2.49127205483516 2007 2.35783384681715 2008 1.89577582116366 2009 3.21728012247853 2010 2.20953092210906 2011 2.20178355476854 2012 2.19524750866848 2013 2.08001944270805 2014 2.18445541526497 2020 2.17291633620231