Year	Percent
1950	12.40849
1955	14.31257
1960	12.93683
1965	12.33776
1970	12.37542
1975	12.58966
1980	11.9414
1985	13.63581
1990	13.58474
1995	12.56868
2000	12.18115
2005	12.11221
2010	11.83399
2015	11.89606
2020	11.89255
2025	11.30359
2030	10.51596
2035	10.00511
2040	9.70208
2045	9.45515
2050	9.13086
2055	8.73909
2060	8.31663
2065	7.94945
2070	7.629
2075	7.35905
2080	7.08536
2085	6.80649
2090	6.53033
2095	6.27813
2100	6.05544