Year	Percent
1950	14.78333
1955	14.89073
1960	13.50869
1965	13.85992
1970	14.67884
1975	15.28299
1980	16.8982
1985	15.30856
1990	15.45547
1995	12.99137
2000	12.82626
2005	12.5833
2010	12.12973
2015	12.01857
2020	11.82657
2025	10.88479
2030	10.01344
2035	9.31962
2040	8.85176
2045	8.48447
2050	8.08248
2055	7.62884
2060	7.16004
2065	6.78178
2070	6.48208
2075	6.24935
2080	6.02943
2085	5.80117
2090	5.58106
2095	5.40038
2100	5.26932