Year	Percent
1950	9.78588
1955	9.54655
1960	9.91132
1965	10.12864
1970	10.16793
1975	10.15335
1980	10.38105
1985	11.01181
1990	11.5038
1995	11.2835
2000	10.80223
2005	11.35702
2010	12.01183
2015	11.26624
2020	10.29101
2025	9.94872
2030	10.44238
2035	10.10549
2040	9.64434
2045	9.14037
2050	8.71918
2055	8.40735
2060	8.16522
2065	7.90029
2070	7.5854
2075	7.2645
2080	6.98366
2085	6.75028
2090	6.55873
2095	6.39044
2100	6.21546