Year	annual %
1971	-0.35310578314195595
1972	0.014474345343785444
1973	-0.05793121433363524
1974	-0.06882807880455744
1975	-0.06130784869489503
1976	3.031782419062395
1977	3.0554628758679314
1978	3.0188301894992264
1979	3.0095727631257887
1980	3.137202848985197
1981	3.396391929855369
1982	-2.9040775807909966
1983	-0.8736866690061902
1984	2.8449719475386814
1985	5.562182178075432
1986	2.567841230402209
1987	7.711801165827993
1988	4.114159495976736
1989	2.970132151306686
1990	0.8025260583906118
1991	0.3946330648313108
1992	2.1617495973106173
1993	2.8337960070362413
1994	5.339334505715328
1995	4.3571668188449735
1996	5.380373762448727
1997	5.763740980095065
1998	6.355244496110714
1999	8.972178992517257
2000	1.9356445643537938
2001	-1.7740625428053534
2002	-1.9254169161662276
2003	-2.823011442433554
2004	2.1379548543501556
2005	3.9101532660760228
2006	7.7543594691793345
2007	2.5587351601244563
2008	1.0763201608570085
2009	-1.9166377811435211