Year	Percent
1950	10.53277
1955	10.13718
1960	12.03796
1965	12.9905
1970	15.38375
1975	14.89827
1980	14.80346
1985	13.80282
1990	13.46234
1995	14.26836
2000	11.74728
2005	9.29668
2010	8.25206
2015	9.55625
2020	11.40712
2025	10.1674
2030	8.93145
2035	8.0456
2040	7.63689
2045	7.64609
2050	7.80968
2055	7.84069
2060	7.49876
2065	6.96517
2070	6.57966
2075	6.43286
2080	6.43099
2085	6.42995
2090	6.31333
2095	6.09444
2100	5.85651