Year	US Dollars adjusted for inflation)
1991	20791.195
1992	21655.625
1993	22907.951
1994	24235.248
1995	25820.438
1996	27252.213
1997	28327.539
1998	28366.941
1999	30902.6
2000	32306.646
2001	33107.105
2002	34606.621
2003	35688.859
2004	36747.285
2005	37863.555
2006	39378.383
2007	41075.871
2008	42141.379
2009	42731.145
2010	45000.48
2011	45961.109
2012	46264.129
2013	46976.109
2014	47537.398
2015	48391.836
2016	49316.703
2017	50659.035
2018	51896.695
2019	53053.562
2020	54303.711
2021	55614.496
2022	56990.117