Year	% of GDP
1995	23.24173885171941
1996	21.418577910968775
1997	20.462120898944235
1998	20.16276133803907
1999	19.745856584763835
2000	18.501773803138093
2001	17.27538130652321
2002	17.118246962857793
2003	17.683024997072046
2004	17.292876122585703
2005	18.00710989955485
2006	16.800847388085025
2007	16.74890053333458
2008	16.445808688411727
2009	15.523308267462504
2010	15.003580239798628
2011	15.96944890779723
2012	15.516106292830626
2013	16.692724892191922
2014	17.435784158643962
2015	18.10789794599629
2016	18.091773037847926
2017	18.565870835031447
2018	18.546740404442883
2019	18.783835608390042
2020	18.63655359273702
2021	19.28702216590395
2022	19.497439451231664