Year	Percent
1975	36.12242
1976	69.73763
1977	93.97678
1978	70.84494
1979	162.91576
1980	94.14194
1981	93.80833
1982	88.75474
1983	96.07384
1984	94.99626
1985	80.33533
1986	85.0725
1987	113.53591
1988	69.85054
1989	104.90949
1990	129.27526
1991	77.18772
1992	90.78613
1993	113.41776
1994	72.6427
1995	58.41961
1996	50.54635
1997	67.5023
1998	50.87872
1999	49.45476
2000	39.0664
2001	46.46689
2002	39.39884
2003	51.99948
2004	42.20892
2005	55.88854
2006	36.32105
2007	49.09232
2008	35.24582
2009	47.19211
2010	59.65646
2011	60.07069
2012	45.55949
2013	76.43343
2014	82.39522
2015	63.62357
2016	81.07572
2017	70.08644
2018	83.16932
2019	83.04052
2020	136.97577
2021	109.72397