Year	US Dollars adjusted for inflation)
1990	13500
1991	11920
1992	11790
1993	11890
1994	12070
1995	12510
1996	13000
1997	13030
1998	12930
1999	13210
2000	13620
2001	13960
2002	14180
2003	14640
2004	15100