Year	Percent
1950	11.58885
1955	11.81808
1960	12.54789
1965	11.63527
1970	11.89725
1975	12.14204
1980	12.32053
1985	12.44727
1990	12.82324
1995	12.72945
2000	12.75156
2005	12.7593
2010	13.53228
2015	13.8146
2020	13.49255
2025	12.11498
2030	11.47397
2035	10.71137
2040	10.06214
2045	9.44478
2050	8.82943
2055	8.21209
2060	7.62619
2065	7.12886
2070	6.71688
2075	6.36241
2080	6.06927
2085	5.81478
2090	5.60004
2095	5.43271
2100	5.30692