Year	Number
1996	1.09829199314117
1998	1.11441886425018
2000	1.11794853210449
2002	1.09297561645508
2003	1.2243549823761
2004	1.19513034820557
2005	1.19432353973389
2006	1.19149804115295
2007	1.18671822547913
2008	1.21700000762939
2009	1.20862829685211
2010	1.19297075271606
2011	1.2062178850174
2012	1.20560419559479
2013	1.2057980298996
2014	1.17679691314697
2015	1.20089077949524
2016	1.21339190006256
2017	1.21172451972961
2018	1.12343680858612
2019	1.0637800693512
2020	1.07856965065002
2021	1.04850840568542
2022	1.06481456756592