year,data1
2003,5.3
2004,5.7
2005,7.4
2006,5.5
2007,4.9
2008,5.2
2009,3.2
2010,3.0
2011,2.9
2012,2.6
2013,2.5
2014,2.6
2015,2.3
2016,2.0
2017,1.9
2018,2.0