Year	Percent
1950	11.48582
1955	11.77926
1960	12.49695
1965	11.80573
1970	11.84102
1975	12.2691
1980	13.08682
1985	12.67183
1990	8.91886
1995	11.23436
2000	12.52158
2005	14.24764
2010	14.39999
2015	12.85611
2020	13.16462
2025	13.00886
2030	12.43228
2035	12.205
2040	11.91849
2045	11.44887
2050	10.88953
2055	10.32436
2060	9.78596
2065	9.33014
2070	8.9006
2075	8.49227
2080	8.06528
2085	7.6477
2090	7.28379
2095	6.94766
2100	6.66868