Year	Percent
1950	10.41582
1955	11.11041
1960	10.75927
1965	11.80199
1970	11.72875
1975	11.7048
1980	12.08023
1985	12.58607
1990	13.29096
1995	13.28325
2000	12.9931
2005	12.77437
2010	12.69149
2015	13.3196
2020	13.81472
2025	13.45893
2030	12.94847
2035	12.62321
2040	12.35707
2045	12.0155
2050	11.57624
2055	11.0735
2060	10.564
2065	10.10074
2070	9.66144
2075	9.26939
2080	8.88348
2085	8.50537
2090	8.15816
2095	7.82454
2100	7.52788