Year	US Dollars adjusted for inflation)
1991	71640.32
1992	73853.695
1993	74484.727
1994	75693.742
1995	79038.695
1996	83143.289
1997	88098.758
1998	88395.391
1999	91891.055
2000	96063.188
2001	98871.672
2002	102108.031
2003	103422.922
2004	107149.688
2005	107533.992
2006	110235.664
2007	111252.242
2008	106972.586
2009	109309.289
2010	114508.461
2011	116133.289
2012	115456.484
2013	114224.703
2014	122104.203
2015	150927.906
2016	154886.703
2017	164533.484
2018	171273.312
2019	175893
2020	179311.078
2021	182228.141
2022	185092.062