Year	annual %
1978	3.646318732525629
1979	49.24131729796561
1980	25.85479740924838
1981	18.347196457423255
1982	14.562370430297822
1983	19.7334157214106
1984	32.64892362135063
1985	35.47033486174795
1986	30.230363699768198
1987	25.341020067416437
1988	20.668811420815842
1989	18.65216983784797
1990	28.866594693279264
1991	26.679108289799004
1992	30.799670948281886
1993	46.66979072893416
1994	31.500134526131703
1995	29.461022201477828
1996	25.273156798669817
1997	20.72731167365133
1998	14.904350065599692
1999	14.666477706398753
2000	12.324781980742893
2001	15.042413505772975
2002	13.140436282577678
2003	19.239766656868127
2004	14.8869201406815
2005	16.741652395309035
2006	22.116118852373432
2007	16.735534583551793
2008	17.778107551017033
2009	28.42327787261541
2010	18.94831461332471
2011	17.322969786285356
2012	14.391652016690196
2013	13.58890221463145
2014	11.011936136133569
2015	13.343101694296003
2016	11.333118951433084
2017	8.109777961839736
2018	6.991061693513583
2019	8.882279059689598
2020	10.013562314124755
2021	9.075745733567699
2022	11.66330022405662
2023	9.84883453512065