Year	Percent
1950	13.38095
1955	15.59394
1960	15.52857
1965	15.45841
1970	15.7852
1975	14.29776
1980	15.92911
1985	18.3953
1990	17.41471
1995	16.69892
2000	16.61081
2005	16.36607
2010	15.78629
2015	15.00218
2020	14.24972
2025	13.65612
2030	12.95631
2035	12.19858
2040	11.45755
2045	10.82879
2050	10.2218
2055	9.65346
2060	9.11515
2065	8.60126
2070	8.1414
2075	7.71444
2080	7.34832
2085	7.0143
2090	6.71326
2095	6.44011
2100	6.19195