Year	% of GDP
1997	1.05648994445801
1999	0.963869988918304
2001	1.10028994083405
2003	1.14891004562378
2005	1.12042999267578
2007	1.15763998031616
2009	1.25214004516602
2011	1.23224997520447
2013	1.15339004993439
2015	1.22817003726959
2017	1.34912002086639
2019	1.40640997886658
2021	1.45474994182587