Year	Percent
1950	14.55987
1955	15.30468
1960	14.11052
1965	14.47995
1970	14.93344
1975	15.31798
1980	15.48313
1985	15.67593
1990	14.76178
1995	15.4556
2000	15.59474
2005	15.65732
2010	15.34074
2015	15.49337
2020	14.32845
2025	13.92093
2030	13.38921
2035	12.78566
2040	12.11182
2045	11.47858
2050	10.9023
2055	10.35889
2060	9.86767
2065	9.40126
2070	8.96072
2075	8.53762
2080	8.13912
2085	7.77008
2090	7.42932
2095	7.10486
2100	6.8223