Year	Percent
1950	13.34932
1955	13.22854
1960	11.71833
1965	13.44692
1970	13.45084
1975	13.49943
1980	13.28585
1985	13.1267
1990	13.40709
1995	13.31244
2000	12.6452
2005	12.73061
2010	13.21407
2015	13.55
2020	13.67713
2025	13.58748
2030	13.47579
2035	13.40086
2040	13.26786
2045	13.0647
2050	12.80808
2055	12.48604
2060	12.1116
2065	11.70755
2070	11.28756
2075	10.8539
2080	10.40305
2085	9.99673
2090	9.57084
2095	9.18532
2100	8.81906