Year	annual % growth
1981	-6.5557880958577215
1982	-3.696191651113722
1983	6.023869018969165
1984	9.32203608640225
1985	-5.044920353235227
1986	2.3574980396306273
1987	-0.0619428460857705
1988	6.682235158534056
1989	-7.795500162016623
1990	-4.746951087084653
1991	14.301259029284296
1992	7.19021687899486
1993	12.209132209551711
1994	12.124514852001965
1995	-11.73147259667003
1996	12.96679449309535
1997	6.7344213246964415
1998	-1.3273481157111888
1999	1.623851443794706
2000	-7.661618218065897
2001	-1.8587435236007366
2002	-0.9609573706719061
2003	-8.86134954477484
2004	2.060820833235624